A type of anti-rollover guardrail for tourist highways

Abstract

This invention discloses an anti-rollover guardrail for tourist highways, relating to the technical field of guardrails. It includes a main base with multiple buffer boxes on its upper surface, each containing multiple support blocks. A stress-relieving mechanism includes multiple connecting rods on the upper surface of the main base. Lower plates are fixed to both sides of the connecting rods on the upper surface of the main base. Upper plates, which are inserted into the connecting rods, are connected to the top of the lower plates. Rotating seats are fixed to one side of both the upper and lower plates, and load-bearing plates are connected to the sides of the two rotating seats away from the main base. A fixing mechanism includes a connecting cylinder threaded onto the bottom surface of the connecting rods. Multiple upper plates are rotatably mounted on the lower surface of the connecting cylinder. Each upper plate has a lower plate connected to its bottom, and conical protrusions are connected to the bottom of each lower plate. This invention effectively prevents vehicle rollover while providing sufficient support and cushioning.

Description

Technical Field

[0001] This invention relates to the field of guardrails, and more particularly to an anti-rollover guardrail for tourist highways. Background Technology

[0002] With the booming development of tourism, the traffic volume on tourist highways has increased significantly, especially the number of large buses and private cars. However, due to various factors such as road conditions, improper driver operation, and vehicle malfunctions, traffic accidents occur frequently, with vehicle rollover accidents being particularly serious. These accidents not only cause casualties but also result in huge economic losses. Therefore, it is necessary to install guardrails on both sides of tourist highways for protection. These guardrails must not only prevent vehicles from running off the road but also provide sufficient support and cushioning in the event of a rollover to reduce the damage to vehicles and passengers. Existing highway guardrail structures are relatively simple, primarily designed to prevent vehicles from running off the road, with blocking and isolation as their main functions.

[0003] For example, application number CN201521110885.7 discloses a highway guardrail, comprising a flexible surface and a three-dimensional guardrail frame. The flexible surface is detachably covered on the guardrail frame, which is composed of multiple retractable rods. The highway guardrail also includes a weight-bearing structure connected to the guardrail frame, the weight-bearing structure being a water tank. The water tank is equipped with a connecting device, which is connected to the flexible surface. The above-mentioned guardrail has the following shortcomings in practical use:

[0004] The guardrail has a trapezoidal structure and a soft surface on the side that contacts the vehicle to cushion the impact and reduce the area of ​​friction with the vehicle. It also helps drivers adjust the vehicle's direction and speed. However, when the vehicle collides with the guardrail with a large force, it cannot disperse and dissipate the impact. At the same time, the guardrail itself has poor fixing strength, which makes it unable to provide sufficient support when the vehicle is hit, making it easy to be damaged and unable to prevent the vehicle from overturning. Summary of the Invention

[0005] To address the shortcomings of conventional highway guardrails in preventing vehicle obstruction and providing sufficient support and cushioning, this invention provides an anti-rollover guardrail for tourist highways.

[0006] The present invention provides a rollover prevention guardrail for tourist highways, which adopts the following technical solution:

[0007] A rollover prevention guardrail for a tourist highway includes a main base, with multiple buffer boxes provided on the upper surface of the main base. Multiple support blocks are inserted into each of the multiple buffer boxes, and a force-dissipating mechanism for mitigating impact is provided on both sides of the multiple buffer boxes on the upper surface of the main base.

[0008] The unloading mechanism includes multiple connecting rods set on the upper surface of the main base. A lower plate is fixed on both sides of the upper surface of the main base located on the multiple connecting rods. An upper plate is connected to the top of the lower plate and inserted into the connecting rods. A rotating seat is fixed on one side surface of both the upper plate and the lower plate. A force-bearing plate is connected to the side of the two rotating seats away from the main base.

[0009] Multiple connecting rods are equipped with a fixing mechanism at their bottom to improve stability. The fixing mechanism includes a connecting cylinder threaded onto the bottom surface of the connecting rod. Multiple upper plates are rotatably mounted on the lower end face of the connecting cylinder. Each of the upper plates is connected to a lower plate at its bottom. Conical protrusions are connected to the bottom of each of the lower plates.

[0010] By adopting the above technical solution, the support blocks are interlocked with the buffer box to form an integral connection. When any part of the support block is impacted, the impact can be dispersed to the rest of the support block. At the same time, the force plate receives the impact force and converts the impact into the moving force of the upper plate, so that the upper plate pushes the vehicle back, playing a buffering role and assisting the vehicle to return to its correct position. Meanwhile, the upper and lower panels are located underground and unfold, increasing the grip of the main base and improving the support of the guardrail.

[0011] Preferably, a second rotating seat is fixedly provided on the side surface of the force-bearing plate at the positions of the upper plate and the lower plate, and a connecting plate is rotatably provided on the surface of each of the two second rotating seats. The side of each connecting plate away from the second rotating seat is connected to the two first rotating seats.

[0012] By adopting the above technical solution, the load-bearing plate is pressed inward under pressure, causing the rotating seat 2 to apply a thrust to the connecting plate, thereby allowing the connecting plate to transmit the thrust from the rotating seat 1 to the upper and lower plates, forming the unfolding of the upper and lower plates and buffering the pressure on the load-bearing plate.

[0013] Preferably, the top of the upper plate has insertion holes at the positions of multiple connecting rods, the multiple connecting rods pass through the insertion holes at the top of the upper plate, and the portion of the multiple connecting rods at the top of the upper plate is fixed with a top plate.

[0014] By adopting the above technical solution, the insertion hole provides space for the insertion of multiple connecting rods. At the same time, the insertion of the connecting rod into the insertion hole limits the movement of the upper plate, and the top plate limits the height of the connecting rod, thereby limiting the longitudinal movement distance of the upper plate.

[0015] Preferably, a smooth rod is fixedly provided on the lower end face of the connecting cylinder at the position of the multiple upper display plates, and the surfaces of the multiple smooth rods are rotatably connected to the top of the multiple upper display plates.

[0016] By adopting the above technical solution, when the connecting cylinder moves downward, it applies pressure to multiple upper display plates. At the same time, when the bottom of the upper display plate is connected to the subsequent lower display plate structure, the upper display plate rotates and unfolds around the smooth rod as the center point, thereby expanding the overall area.

[0017] Preferably, the upper end face of the conical protrusion is provided with a threaded opening at the position where it aligns with the connecting rod, and a smooth rod is fixedly provided on the upper end face of the conical protrusion at the position of multiple lower expansion plates, and the surfaces of the multiple smooth rods are rotatably connected to the bottom of the multiple lower expansion plates one by one.

[0018] By adopting the above technical solution, the tops of multiple lower display panels are subjected to downward pressure, while the bottoms of the lower display panels rotate around the smooth rod 2 as the center, forming an overall unfolding effect with multiple upper display panels, thus extending and fixing themselves underground.

[0019] Preferably, a washer is threaded onto the top of the connecting rod surface at the top of the connecting cylinder, and a nut is threaded onto the top of the washer on the connecting rod surface.

[0020] By adopting the above technical solution, the rotation of the connecting rod causes the nut to apply pressure to the washer. The washer prevents the nut from directly contacting the connecting cylinder, thus preventing wear. At the same time, the washer accepts the pressure of the nut to keep the connecting cylinder fixed.

[0021] Preferably, each of the plurality of buffer boxes has a slot at the position of a plurality of support blocks, and the plurality of slots are inserted into the plurality of support blocks one by one. Each of the plurality of support blocks has a mounting hole at the position of a connecting rod, and the plurality of mounting holes are movably inserted into the plurality of vertically aligned connecting rods.

[0022] By adopting the above technical solution, the slot facilitates the movable insertion of the support block, while the opening of the mounting hole allows the connecting rod to be inserted into the mounting hole for lateral fixation, forming an overall fixation.

[0023] Preferably, the upper surface of the main base is provided with threaded holes at the positions of multiple connecting rods, and the multiple threaded holes are threadedly connected to the multiple connecting rods one by one.

[0024] By adopting the above technical solution, the connecting rod is connected to the threaded hole, so that the connecting rod as a whole is fixed to the main body base, thereby keeping the connecting rod in a vertical state to facilitate the movement of the upper plate.

[0025] Preferably, each of the multiple buffer boxes has a movable groove on its top, and the interior of the buffer box has a filling cavity formed around the multiple slots and movable grooves. An L-shaped plate is inserted into the movable groove, and a limiting block is provided on one side of the L-shaped plate to abut against the side wall of the buffer box.

[0026] By adopting the above technical solution, the movable groove is inserted into the L-shaped plate, thereby limiting the movement of the L-shaped plate. At the same time, the limiting block protrudes from the buffer box to prevent the L-shaped plate from being accidentally pulled out. The injection cavity is filled with buffer material to increase the impact resistance.

[0027] Preferably, the two sides of the L-shaped plate away from the limiting block are respectively fixedly connected to the two adjacent force-bearing plates.

[0028] By adopting the above technical solution, two adjacent load-bearing plates are connected as a whole through an L-shaped plate, so that the moving direction of the load-bearing plate is consistent with that of the L-shaped plate to form a limit.

[0029] In summary, the present invention has at least one of the following beneficial technical effects:

[0030] 1. The L-shaped plate connects the load-bearing plates on both sides, thus initially dispersing the impact force to the buffer box. The support block connects the main body base and the buffer box, thus dispersing the impact force a second time and forming a pullback. Then, the load-bearing plate receives the direct impact force of the vehicle and converts the impact force into upward force, thereby pushing up the side wall of the vehicle. Multiple dispersion of impact force provides good buffering and blocking functions.

[0031] 2. By rotating the connecting rod, the lower and upper panels unfold within the anchor bolt holes, improving the grip of the connecting rod. At the same time, the filling material of the main base and buffer box increases the weight, giving the guardrail good overall support. Attached Figure Description

[0032] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0033] Figure 2 This is an exploded view of the structure of the present invention;

[0034] Figure 3 This is a side sectional view of the buffer box of the present invention;

[0035] Figure 4 This is an exploded view of the force-relief mechanism of the present invention;

[0036] Figure 5 This is an exploded view of the fixing mechanism of the present invention;

[0037] Figure 6 This is an unfolded diagram of the fixing mechanism of the present invention;

[0038] Figure 7 This is a diagram showing the unfolded force-relieving mechanism of the present invention.

[0039] Reference numerals: 1. Main base; 2. Buffer box;

[0040] 3. Unloading mechanism; 31. Lower plate; 32. Upper plate; 33. Rotating seat one; 34. Connecting plate; 35. Rotating seat two; 36. Force-bearing plate; 37. Connecting rod; 38. Top plate; 39. Insertion hole;

[0041] 4. Support block;

[0042] 5. Fixing mechanism; 51. Connecting cylinder; 52. Washer; 53. Nut; 54. Smooth rod one; 55. Upper display plate; 56. Lower display plate; 57. Conical protrusion; 58. Smooth rod two; 59. Threaded end;

[0043] 6. Threaded hole; 7. Filling cavity; 8. Slot; 9. Movable groove; 10. L-shaped plate; 11. Limiting block; 12. Mounting hole. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0045] This invention discloses an anti-rollover guardrail for tourist highways.

[0046] Reference Figure 1 , Figure 2 , Figure 3 , Figure 7 A rollover prevention guardrail for tourist highways includes a main base 1 made of zinc steel, with cement mortar and other materials filling the interior to increase stability. Multiple buffer boxes 2 are fixed to the upper surface of the main base 1. The buffer boxes 2 are trapezoidal in shape, and multiple slots 8 (at least four) are provided on both sides of each buffer box 2. Support blocks 4 of uniform width are inserted into each slot 8. An injection chamber 7 is provided inside the buffer box 2, located outside the slots 8. The injection chamber 7 is filled with water, mud, sand, and other materials that provide cushioning. A movable groove 9 is provided at the top of the buffer box 2, inclined at 30°. An L-shaped plate 10 is movably inserted into the groove 9. One end of the L-shaped plate 10 protrudes to both sides as a limiting block 11, and the sum of the widths of the limiting block 11 and the L-shaped plate 10 is greater than the width of the movable groove 9.

[0047] It should be noted that the bottom of the main base 1 is fixed with cement at the connection with the ground. The support block 4 is made of cast iron, which has good corrosion resistance, durability and is not easily deformed. The length of the support block 4 is the same as that of the main base 1. The length of the main base 1 and the number of buffer boxes 2 are adjusted according to the total length of the tourist road. The part of the support block 4 located between multiple buffer boxes 2 is provided with a set of mounting holes 12 (each set of mounting holes 12 has at least five holes).

[0048] The main base 1 is filled with cement to increase its weight, and the gaps at the connection with the ground are filled with cement to fix the main base 1 to the ground. At the same time, the buffer box 2 is filled with buffer material, so that the weight of the buffer box 2 is applied to the main base 1 to form a secondary reinforcement. The slot 8 is provided as a support point for the installation of the support block 4, so that the support block 4 can be inserted into multiple buffer boxes 2 in sequence to form an integral connection. When a point on the surface of the support block 4 is impacted, the inner wall of the slot 8 of the adjacent buffer box 2 will clamp the support block 4 first, and the impact will continue to act on the remaining buffer boxes 2, so that the support block 4 pulls the impact source in the opposite direction, which improves the overall support of the guardrail and has a good barrier function.

[0049] Reference Figure 2 , Figure 4 The upper surface of the main base 1 has a row of threaded holes 6 between multiple buffer boxes 2 (each row of threaded holes 6 has at least five holes), and the threaded holes 6 penetrate the bottom of the main base 1 and communicate with the ground. The unloading mechanism 3 includes a connecting rod 37 threaded in the threaded hole 6. The connecting rod 37 is set with a smooth surface and a threaded surface from top to bottom, and the threaded surface of the connecting rod 37 is connected to the threaded hole 6 and protrudes from the bottom of the main base 1. The upper surface of the main base 1 is fixed with a lower plate 31 on both sides of the multiple connecting rods 37, and the opposite side surface of the two lower plates 31 is fixed to the surface of the two support blocks 4 at the bottom. The upper surface of the two lower plates 31 abuts against a U-shaped upper plate 32. The upper surface of the upper plate 32 is provided with a hole 39 of the same width at the position of the multiple threaded holes 6, and the inner wall of the upper plate 32 is fixed to the surface of the two support blocks 4 at the top.

[0050] It should be noted that a stress-relieving mechanism 3 is provided between every two buffer boxes 2. The outer surfaces of the two lower plates 31 are inclined, thus forming a trapezoid with the upper plate 32. At the same time, the width of each row of threaded holes 6 is consistent with the width of each set of mounting holes 12 and the center is aligned. Multiple connecting rods 37 move sequentially from bottom to top through the threaded holes 6, mounting holes 12 and insertion holes 39, thus being located at the top of the upper plate 32. A top plate 38 is fixed at the position of the connecting rods 37 at the top of the upper plate 32. The bottom of the top plate 38 is arc-shaped, and the width of the arc is consistent with the width of the top of the upper plate 32.

[0051] The upper plate 32 and the lower plate 31 are trapezoidal in shape, so that the impact of the vehicle is initially dispersed by the trapezoidal slope. The support block 4 is connected to the inner wall of the upper plate 32 and the lower plate 31 respectively, so as to continuously provide support force to the upper plate 32 and the lower plate 31 and form the longitudinal fixation of the connecting rod 37. At the same time, the connecting rod 37 is fixed by the bottom thread of the main body base 1. With the insertion of the connecting rod 37 and the support block 4, the support block 4 is laterally fixed in the upper plate 32 and the lower plate 31, thereby dispersing the support force of the buffer box 2 to the upper plate 32 and the lower plate 31, which is used to distribute the impact force dispersed by the buffer box 2, and can also disperse the impact force received by the vehicle to the buffer box 2, which has a good buffering effect.

[0052] Reference Figure 2 , Figure 4 , Figure 7 Both the lower plate 31 and the upper plate 32 have rotating seats 33 screwed onto one end of their side surfaces. Rotating rods are fixed inside the two rotating seats 33, and connecting plates 34 are rotatably connected to the surfaces of the two rotating rods. Rotating seats 35 are rotatably connected to the ends of the two connecting plates 34 away from the rotating seats 33. The structure of the rotating seats 35 is the same as that of the rotating seats 33, and they are opposite in direction. Force plates 36 are screwed onto the side surfaces of the two rotating seats 35 away from the connecting plates 34. The force plates 36 are made of hard rubber material, which has high hardness and provides a certain deformation capacity. The opposite sides of the two adjacent force plates 36 are fixed to both ends of the side surface of the L-shaped plate 10 to form a whole.

[0053] The force-bearing plate 36 moves inward upon impact. Simultaneously, the L-shaped plate 10 acts as a connector, sharing the impact force on the force-bearing plate 36 and pressing inward along the movable groove 9. The L-shaped plate 10 guides the force-bearing plate 36 as it presses in, causing it to translate in the same direction. This inward movement of the force-bearing plate 36 pushes the two rotating seats 35 to move. The movement of the two rotating seats 35 drives the two connecting plates 34 to move synchronously. At the same time, the other ends of the two connecting plates 34 connect to the two rotating seats 33 at an inclined angle, causing the two connecting plates 34 to push the rotating seats 33, causing the upper plate 32 to rise along the surface of the connecting rod 37. Finally, the top of the upper plate 32 abuts against the top plate 38, forming a limit. During the movement of the upper plate 32, the force-bearing plate 36 is pressed inward as a whole, releasing the impact force and converting it into the kinetic energy of the upper plate 32, thus dispersing and unloading the impact force in a secondary manner.

[0054] Reference Figure 4 , Figure 5 , Figure 6Each connecting rod 37 located at the bottom of the main body base 1 is connected to a fixing mechanism 5. The fixing mechanism 5 includes a connecting cylinder 51 threaded to the threaded surface at the bottom of the connecting rod 37. The lower end surface of the connecting cylinder 51 has four grooves, and each of the four grooves has a smooth rod 54 fixed in it. The surfaces of the four smooth rods 54 are rotatably connected to an upper display plate 55. The side of the four upper display plates 55 away from the smooth rods 54 is rotatably connected to four lower display plates 56. At the same time, the bottom of the four lower display plates 56 is provided with a conical protrusion 57. The upper end surface of the conical protrusion 57 is provided with a groove 2 at the position of the four lower display plates 56. Each of the four grooves 2 has a smooth rod 58 fixed in it. The surfaces of the four smooth rods 58 are rotatably connected to the bottom of the four lower display plates 56.

[0055] It should be noted that a washer 52 is threadedly connected to the surface of the connecting rod 37 between the connecting cylinder 51 and the main body base 1, and a nut 53 is also threadedly connected to the top of the washer 52 on the surface of the connecting rod 37. At the same time, a threaded opening 59 with the same width as the connecting rod 37 is opened in the middle of the upper surface of the conical protrusion 57, and the inner wall of the threaded opening 59 is threadedly connected to the bottom of the connecting rod 37.

[0056] The connecting cylinder 51 is normally buried underground. Rotating the connecting rod 37 causes the conical protrusion 57 and the connecting cylinder 51 to rotate synchronously, thus moving towards each other. As the connecting cylinder 51 and the conical protrusion 57 move, they apply a thrust to both ends of the upper and lower display plates 55 and 56, causing the upper display plate 55 to rotate via the smooth rod 54 and the lower display plate 56 to rotate via the smooth rod 58. This reduces the angle between the adjacent upper and lower display plates 55 and 56, increases the lateral length of the upper and lower display plates 55 and 56, and allows them to unfold underground, improving the grip of the connecting rod 37 and thus enhancing the stability of the main base 1. At the same time, as the connecting rod 37 rotates, the nut 53 presses down into the washer 52, causing the washer 52 to squeeze the top of the connecting cylinder 51 and prevent the connecting cylinder 51 from loosening.

[0057] The implementation principle of the anti-rollover guardrail for tourist highways according to an embodiment of the present invention is as follows: When installing this guardrail, anchor bolt holes need to be drilled in the ground using tools such as drill bits. Then, the main body base 1, which is already threadedly connected to the connecting rod 37, is placed from top to bottom, and the connecting rod 37 is aligned with the anchor bolt holes to ensure that the fixing mechanism 5 is located in the anchor bolt holes. Then, the connecting rod 37 is rotated to shorten the distance between the connecting cylinder 51 and the conical protrusion 57, so that the upper display plate 55 and the lower display plate 56 are rotated and unfolded, thereby unfolding in the anchor bolt holes to improve the grip of the main body base 1. Then, cement and other materials are poured into the main body base 1 to increase the weight, and mud and sand are poured into the buffer box 2 for a second weight increase. With the unfolding of the upper display plate 55 and the lower display plate 56, the main body base 1 is fixed on the ground surface, providing sufficient support.

[0058] When the vehicle overturns while driving, it compresses the load-bearing plate 36. The load-bearing plate 36 is pressed inward under pressure, and the impact force is initially transmitted to the surface of the L-shaped plate 10, forming an initial dispersion. Then, as the load-bearing plate 36 continues to press in, it transmits pressure to the two connecting plates 34. At the same time, the lower plate 31 is in a fixed state, so the pressure is transmitted to the upper plate 32 through the upper connecting plate 34. The upper plate 32 is rotatably connected to the connecting plate 34, thereby converting the pressure into thrust. This causes the upper plate 32 to move upward along the surface of the connecting rod 37, dispersing the pressure a second time. At this time, the vehicle is in a tilted state, and the upper plate 32 pushes upward, thereby forming an upward thrust on the side surface of the vehicle. Combined with the weight of the vehicle itself and the deceleration of the personnel, this helps the vehicle gradually return to a normal state.

[0059] Furthermore, when the upper plate 32 and the lower plate 31 are impacted as a whole, the support block 4 of the stressed part receives the pressure and distributes the pressure to the other parts that are not impacted. The support block 4 is inserted into the buffer box 2 to form a lateral clamping and fixing, thereby distributing the pressure to the main base 1 and the buffer box 2, so that the support block 4 forms opposite pulling force on the vehicle surface. The multiple pressure dispersion has a good buffering effect and protects the safety of the people in the vehicle.

[0060] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A rollover prevention guardrail for tourist highways, characterized in that: Includes a main base (1), the upper surface of the main base (1) is provided with multiple buffer boxes (2), multiple support blocks (4) are inserted into each of the multiple buffer boxes (2), and the upper surface of the main base (1) is provided with a force-dissipating mechanism (3) for mitigating impact on both sides of the multiple buffer boxes (2). The unloading mechanism (3) includes multiple connecting rods (37) arranged on the upper end face of the main body base (1). The upper end face of the main body base (1) is fixed with a lower plate (31) on both sides of the multiple connecting rods (37). The top of the lower plate (31) is connected with an upper plate (32) that is inserted into the connecting rods (37). A rotating seat (33) is fixed on one side surface of both the upper plate (32) and the lower plate (31). A force-bearing plate (36) is connected to the side of the two rotating seats (33) away from the main body base (1). Each of the multiple connecting rods (37) is provided with a fixing mechanism (5) for improving stability. The fixing mechanism (5) includes a connecting cylinder (51) threaded on the bottom surface of the connecting rod (37). Multiple upper plates (55) are rotatably provided on the lower end face of the connecting cylinder (51). Each of the multiple upper plates (55) is connected to a lower plate (56) at its bottom. Conical protrusions (57) are connected to the bottom of the multiple lower plates (56).

2. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: The side surface of the force-bearing plate (36) is fixed with rotating seat two (35) at the positions of the upper plate body (32) and the lower plate body (31). The surfaces of the two rotating seats two (35) are rotatably provided with connecting plates (34). The side of the two connecting plates (34) away from the rotating seat two (35) is connected to the two rotating seats one (33).

3. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: The top of the upper plate (32) is provided with insertion holes (39) at the positions of multiple connecting rods (37). The multiple connecting rods (37) pass through the insertion holes (39) at the top of the upper plate (32), and the portion of the multiple connecting rods (37) at the top of the upper plate (32) is fixed with a top plate (38).

4. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: The lower end face of the connecting cylinder (51) is fixed with a smooth rod (54) at the position of multiple upper display plates (55), and the surfaces of the multiple smooth rods (54) are rotatably connected to the top of the multiple upper display plates (55).

5. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: The upper end face of the conical protrusion (57) is provided with a threaded opening (59) aligned with the connecting rod (37). The upper end face of the conical protrusion (57) is fixed with a smooth rod (58) at the position of multiple lower expansion plates (56). The surfaces of the multiple smooth rods (58) are rotatably connected to the bottom of the multiple lower expansion plates (56).

6. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: A washer (52) is threaded on the surface of the connecting rod (37) at the top of the connecting cylinder (51), and a nut (53) is threaded on the surface of the connecting rod (37) at the top of the washer (52).

7. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: Each of the multiple buffer boxes (2) has a slot (8) located at the position of the multiple support blocks (4). The multiple slots (8) are inserted into the multiple support blocks (4) one by one. The surfaces of the multiple support blocks (4) are provided with mounting holes (12) located at the position of the connecting rods (37). The multiple mounting holes (12) are movably inserted into the multiple vertically aligned connecting rods (37) respectively.

8. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: The upper surface of the main base (1) is provided with threaded holes (6) at the positions of multiple connecting rods (37), and the multiple threaded holes (6) are threadedly connected to the multiple connecting rods (37).

9. The anti-rollover guardrail for tourist highways according to claim 1, characterized in that: Each of the buffer boxes (2) has a movable groove (9) on its top. The buffer box (2) has a filling cavity (7) with multiple slots (8) and movable grooves (9) inside. An L-shaped plate (10) is inserted into the movable groove (9). A limiting block (11) is provided on one side of the L-shaped plate (10) to abut against the side wall of the buffer box (2).

10. A rollover prevention guardrail for a tourist highway according to claim 9, characterized in that: The L-shaped plate (10) is fixedly connected to two adjacent force plates (36) on both sides of the end away from the limiting block (11).

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