Railway guard rail

By designing adjustable-height overpass components and universal joint connection structures, the stability problem of existing railway guardrails at different slopes and bends has been solved, achieving stable connection of guardrails and noise reduction effects on different terrains.

CN224300559UActive Publication Date: 2026-05-29HEBEI ZHONGSHUO HIGH-SPEED RAILWAY EQUIPMENT MANUFACTURING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEBEI ZHONGSHUO HIGH-SPEED RAILWAY EQUIPMENT MANUFACTURING CO LTD
Filing Date
2025-04-25
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing railway guardrails cannot be bent and connected adaptably on both sides of railways with different slopes, and their installation does not increase the stability of the guardrail structure. Furthermore, the height of the top guardrail cannot be adjusted according to the terrain, which increases the risk of people or small animals climbing over.

Method used

A railway guardrail was designed, including an adjustable height overpass assembly, a ground-mounted pole with a fixed base, a universal joint connection structure, and sound-absorbing cotton and corrugated reflector panels for the sound barrier. Through the combination of support columns, reinforcing rods and universal joints, the guardrail can be stably connected and its height can be adjusted to adapt to railway environments with different slopes and bends.

Benefits of technology

It achieves stable connection of guardrails at different slopes and bends, reduces noise transmission, reduces the risk of people or small animals climbing over, and improves the applicability and stability of guardrails.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224300559U_ABST
    Figure CN224300559U_ABST
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Abstract

The utility model relates to the technical field of guardrails, concretely to a railway guardrail, including two symmetrical support columns and the sound barrier of insertion between two support columns, the support column top is equipped with the adjustable height's vaulting rail subassembly, the support column one side wall is equipped with a plurality of pivot seat, pivot seat all are all pivotally connected with the connecting seat, the connecting seat outside all are equipped with the universal joint, the sound barrier outer wall all are equipped with T type block, two clamping grooves between being equipped with the reinforcing rod, the reinforcing rod both ends all are equipped with the clamping column, this railway guardrail passes through the setting support column with fixed seat, and the fixed seat is fixed through a plurality of ground insertion rods and inserts the ground, and the detachable sound barrier of insertion between support columns reduces the noise penetration influence, under the cooperation of arc rail board, reduces the person or small animal vaulting integral guardrail, and the stability of combination is increased through a plurality of reinforcing rods between two support columns, and the adjacent two guardrails are inserted and cooperated through the universal joint with the ladder type slot on the connecting seat with the ladder type block.
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Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, specifically a railway guardrail. Background Technology

[0002] Railway guardrails are products used for isolation, protection, and beautification along railway sides and boundaries. They are mainly divided into two categories: galvanized guardrails and plastic-coated guardrails. High-speed trains can travel at speeds of over 250 kilometers per hour, which is equivalent to 70 meters per second. When running, they generate a strong suction airflow. If a person enters the enclosed railway line, they are very likely to be sucked under the train. Therefore, it is necessary to protect both sides of the railway.

[0003] The utility model disclosed in announcement number CN219732992U is a railway guardrail, including a set of posts, an adjustment component set in the inner cavity of the posts, a wire mesh set between the posts, and a fixing component set at the four corners of the wire mesh. The set of posts consists of two posts, and a protective shell is installed at the lower end of the side of the two posts that are close to each other. Limit grooves are opened in the middle of the side of the two posts that are close to the protective shell and above the protective shell. A winding rod is installed at both the upper and lower ends of the wire mesh, and a fixing component is connected to both ends of the winding rod.

[0004] The above-mentioned technical solution can help personnel quickly install, remove, and adjust the guardrail, avoiding the existing problem of guardrails needing to be fixed to the guardrail with bolts and other fasteners, and the difficulty of installation and removal due to their large size. However, the guardrail cannot adapt to the angle of the connection point on both sides of the railway with different slopes, so that the guardrail fits as the railway slope changes. Moreover, the installation of the guardrail cannot increase the structural stability of the guardrail. The two posts are only connected by the guardrail, which reduces the toughness. Furthermore, the height of the top guardrail cannot be adjusted according to different terrains to reduce the risk of injury or death caused by people or small animals climbing over it. Utility Model Content

[0005] The purpose of this utility model is to provide a railway guardrail to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A railway guardrail includes two symmetrical support columns and a sound barrier inserted between them. An adjustable-height overpass assembly is provided above each support column. Several pivot seats are provided on one side wall of each support column, and each pivot seat is rotatably connected to a connecting seat. Universal joints are provided on the outer sides of each connecting seat. A limiting post is provided on the other side wall of each support column, and a T-slot is formed on the outer wall of each limiting post. T-blocks are provided on the outer wall of each sound barrier. Several locking blocks are also provided on the side wall of each support column near the limiting post. A locking groove is formed at the top of each locking block, and a reinforcing rod is provided between two locking grooves on the same horizontal plane. Locking posts are provided at both ends of the reinforcing rod.

[0008] The overpass assembly includes an arc-shaped fence panel and insert posts at the bottom of both ends of the arc-shaped fence panel. Several protective bars are provided in the middle of the arc-shaped fence panel. Slots are opened at the top of the support posts corresponding to the insert posts. A first screw hole communicating with the slot is opened on the outer wall of the support post near the top. A first positioning bolt is provided in the first screw hole.

[0009] Several through holes communicating with the interior are provided on one side of the sound barrier. Side covers are provided on the outer wall of the sound barrier at the locations corresponding to the through holes. Sound-absorbing cotton is provided in the middle of the interior of the sound barrier, and corrugated reflective plates are provided on both sides of the sound-absorbing cotton.

[0010] The universal joint consists of two U-shaped plates connected by a cross pivot. Each U-shaped plate has a trapezoidal block on its outer wall and a through hole at its side. Each through hole contains a fastening bolt.

[0011] Furthermore, each of the support columns is provided with a fixed seat at its bottom, and a detachable grounding rod is inserted into the upper surface of the fixed seat near the corner. The grounding rod is provided with a round cap at its top and the bottom of the grounding rod passes through the fixed seat.

[0012] In this invention, the fixing seat is buried in the ground on both sides of the railway, and with the cooperation of the ground insertion rod, the bottom of the ground insertion rod is inserted into the soil, and the bottom of the round cap is tightly fitted with the fixing seat, so that the ground insertion rod can further fix the fixing seat.

[0013] Specifically, the limiting column is welded and fixed to the support column, the sound barrier and the T-shaped block are integrally formed, and the width of the outer wall of the T-shaped block is adapted to the width of the inner wall of the T-shaped groove.

[0014] In this invention, the T-shaped block and the T-shaped slot are interlocked, which facilitates the installation or removal of the sound barrier. The user can lift the bottom of the sound barrier by hand and push it upward to remove the sound barrier from the limiting post for replacement.

[0015] It should be noted that the card blocks are evenly spaced, and the sidewalls of the card blocks are tightly fitted to the sidewalls of the support columns and welded together. The reinforcing rod and the card column are integrally formed. The width of the outer wall of the card column is adapted to the width of the inner wall of the card slot. A third screw hole is provided on the card column, and a second fixing bolt is provided in the third screw hole. The second fixing bolt passes through the card block and is threadedly connected to the third screw hole.

[0016] In this invention, the reinforcing rod is inserted into the locking block and the locking slot to strengthen the fixation between the two support columns, and the second fixing bolt is threadedly connected to the third screw hole to achieve a stable combination of the locking block and the locking column, increasing the stability of the installation and preventing the reinforcing rod from detaching.

[0017] Furthermore, the bottom of the arc-shaped guardrail is welded and fixed to the top of the insert post, the width of the outer wall of the insert post is adapted to the width of the inner wall of the slot, the first positioning bolt is threadedly connected to the first screw hole, and the first positioning bolt extends to one end of the slot and fits tightly against the outer wall of the insert post, the protective rods are evenly distributed, and the two ends of the protective rods are welded and fixed to the arc-shaped guardrail respectively.

[0018] In this invention, the insert and the slot are inserted into each other, and the end of the first positioning bolt passes through the first screw hole and fits against the outer wall of the insert. The height of the arc-shaped railing is manually lifted, and the position of the insert in the slot is fixed under the action of friction, so as to achieve height adjustment to prevent overturning.

[0019] Specifically, the side wall of the rotating shaft seat is welded and fixed to the side wall of the support column, the connecting seat is rotatably connected to the rotating shaft seat, the connecting seat has a trapezoidal groove, the width of the inner wall of the trapezoidal groove is adapted to the width of the outer wall of the trapezoidal block, the fastening bolt is threaded to the second screw hole, and the fastening bolt passes through the hole.

[0020] In this utility model, the connecting seat and the rotating shaft seat are rotatably connected, the trapezoidal block and the trapezoidal groove are inserted and matched, and the fastening bolt is connected to the second screw hole and then passed into the through hole to fix the trapezoidal block and the trapezoidal groove to prevent the trapezoidal block from coming off the trapezoidal groove.

[0021] It is worth noting that the bottom of the side cover is hollowed out, and the width of the outer wall of the side cover is greater than the width of the inner wall of the through hole. The side end of the side cover is welded and fixed to the outer wall of the sound barrier. The width of the outer wall of the sound-absorbing cotton is adapted to the width of the inner wall of the sound barrier. The corrugated reflector is wavy and is bonded and fixed to the sound-absorbing cotton.

[0022] In this invention, the side cover is used to prevent rainwater from entering the through-hole when rainwater falls naturally, thus reducing the impact of rainwater on the internal sound-absorbing cotton and corrugated reflector. The sound-absorbing cotton absorbs noise that is not reflected by the corrugated reflector, reducing the impact of noise on the other side of the sound barrier.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This utility model features support columns with fixed bases, which are fixed to the ground by multiple ground-inserting rods. Detachable sound barriers are inserted between the support columns. With the cooperation of sound-absorbing cotton and corrugated reflective panels, the impact of noise penetration is reduced. Flip-over components are inserted at the top of the support columns. With the cooperation of the arc-shaped railing, the number of people or small animals climbing over the overall fence is reduced. Multiple reinforcing rods are used between two support columns to increase the stability of the combination. Adjacent guardrails are connected by universal joints with trapezoidal blocks and trapezoidal grooves on the connecting seats.

[0025] 2. This utility model achieves the connection and cooperation of the support columns of two adjacent guardrails at different heights by setting a connecting seat and a rotating shaft seat for rotational connection. It also allows the guardrails to be combined and installed on railway slopes at different heights with the help of a universal joint. At railway bends, the universal joint allows two adjacent guardrails to be bent and connected, increasing its applicability to different areas. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall assembled structure of this utility model;

[0027] Figure 2 This is a side view of the overall assembly of this utility model;

[0028] Figure 3 This is a schematic diagram of the overall splicing and adjustment state of this utility model;

[0029] Figure 4 This is a schematic diagram of the overall structure of this utility model;

[0030] Figure 5 This is a schematic diagram of the combined structure of the overpass component and support column of this utility model;

[0031] Figure 6 This is a schematic diagram of the structure of the present invention with the support column and universal joint separated.

[0032] Figure 7 This is a schematic diagram showing the separation of the support column and the reinforcing rod of this utility model;

[0033] Figure 8 This is a schematic diagram of the sound barrier structure of this utility model.

[0034] The meanings of the labels in the diagram are as follows:

[0035] 1. Support column; 10. Slot; 100. First screw hole; 101. First positioning bolt; 11. Fixing base; 110. Ground insertion rod; 12. Rotary shaft seat; 13. Connecting base; 130. Trapezoidal groove; 131. Second screw hole; 14. Locking block; 140. Locking groove; 15. Reinforcing rod; 150. Locking post; 151. Third screw hole; 152. Second fixing bolt; 16. Limiting post; 160. T-slot;

[0036] 2. Sound barrier; 20. T-block; 21. Through hole; 210. Side cover; 22. Sound-absorbing cotton; 220. Corrugated reflector;

[0037] 3. Vaulting fence assembly; 30. Curved fence panel; 300. Guardrail; 31. Post;

[0038] 4. Universal joint; 40. Trapezoidal block; 400. Through hole; 401. Fastening bolt. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Please see Figures 1-8 This embodiment provides a technical solution:

[0041] A railway guardrail includes two symmetrical support posts 1 and a sound barrier 2 inserted between the two support posts 1. An adjustable height overpass assembly 3 is provided above the support posts 1. Each support post 1 has a fixed seat 11 at its bottom. A detachable ground rod 110 is inserted into the upper surface of the fixed seat 11 near the corner. The top of the ground rod 110 is provided with a round cap, and the bottom of the ground rod 110 passes through the fixed seat 11.

[0042] In this utility model, the fixing seat 11 is buried in the ground on both sides of the railway, and with the cooperation of the ground insertion rod 110, the bottom of the ground insertion rod 110 is inserted into the soil, and the bottom of the round cap is tightly attached to the fixing seat 11, so as to further fix the fixing seat 11 with the ground insertion rod 110.

[0043] Furthermore, several pivot seats 12 are provided on one side wall of the support column 1. Each pivot seat 12 is rotatably connected to a connecting seat 13. Each connecting seat 13 is provided with a universal joint 4 on its outer side. The universal joint 4 is composed of two U-shaped plates connected and combined through a cross pivot. Each U-shaped plate has a trapezoidal block 40 in the middle of its outer wall. Each trapezoidal block 40 has a through hole 400 at its side end. Each through hole 400 has a fastening bolt 401.

[0044] Specifically, the side wall of the rotating shaft seat 12 is welded and fixed to the side wall of the support column 1, the connecting seat 13 is rotatably connected to the rotating shaft seat 12, the connecting seat 13 is provided with a trapezoidal groove 130, the width of the inner wall of the trapezoidal groove 130 is adapted to the width of the outer wall of the trapezoidal block 40, the fastening bolt 401 is threadedly connected to the second screw hole 131, and the fastening bolt 401 passes through the through hole 400.

[0045] In this utility model, the connecting seat 13 is rotatably connected to the rotating shaft seat 12, the trapezoidal block 40 is inserted into the trapezoidal groove 130, and the fastening bolt 401 is connected to the second screw hole 131 and then passed into the through hole 400 to fix the trapezoidal block 40 and the trapezoidal groove 130 to prevent the trapezoidal block 40 from coming off the trapezoidal groove 130.

[0046] It should be noted that a limiting post 16 is provided on the other side wall of the support column 1. A T-shaped groove 160 is provided on the outer wall of the limiting post 16. A T-shaped block 20 is provided on the outer wall of the sound barrier 2. The limiting post 16 is welded and fixed to the support column 1. The sound barrier 2 and the T-shaped block 20 are integrally formed structures, and the width of the outer wall of the T-shaped block 20 is adapted to the width of the inner wall of the T-shaped groove 160.

[0047] In this utility model, the T-shaped block 20 and the T-shaped groove 160 are inserted and matched, which facilitates the insertion and installation or removal and replacement of the sound barrier 2. The user can lift the bottom of the sound barrier 2 with his hand and push it upward to remove the sound barrier 2 from the limiting post 16 for replacement.

[0048] Furthermore, several locking blocks 14 are provided on the side wall of the support column 1 near the limiting column 16. The top of the locking block 14 is provided with a locking groove 140. A reinforcing rod 15 is provided between two locking grooves 140 located on the same horizontal plane. Both ends of the reinforcing rod 15 are provided with locking posts 150. The locking blocks 14 are evenly distributed, and the side wall of the locking block 14 is tightly fitted to the side wall of the support column 1 and welded and fixed. The reinforcing rod 15 and the locking post 150 are integrally formed. The width of the outer wall of the locking post 150 is adapted to the width of the inner wall of the locking groove 140. A third screw hole 151 is provided on the locking post 150. A second fixing bolt 152 is provided in the third screw hole 151. The second fixing bolt 152 passes through the locking block 14 and is threadedly connected to the third screw hole 151.

[0049] In this utility model, the reinforcing rod 15 is inserted into the locking block 14 and the locking groove 140 to strengthen the fixation between the two support columns 1, and the second fixing bolt 152 is threadedly connected to the third screw hole 151 to achieve a stable combination of the locking block 14 and the locking column 150, increase the stability of installation, and prevent the reinforcing rod 15 from falling off.

[0050] It is worth noting that the overpass assembly 3 includes an arc-shaped railing 30 and insert posts 31 at the bottom of both ends of the arc-shaped railing 30. Several guard rods 300 are provided in the middle of the arc-shaped railing 30. A slot 10 is provided at the top of the support post 1 corresponding to the insert post 31. A first screw hole 100 communicating with the slot 10 is provided on the outer wall of the support post 1 near the top. A first positioning bolt 101 is provided in the first screw hole 100. The bottom of the arc-shaped railing 30 is welded and fixed to the top of the insert post 31. The width of the outer wall of the insert post 31 is adapted to the width of the inner wall of the slot 10. The first positioning bolt 101 is threadedly connected to the first screw hole 100, and the first positioning bolt 101 extends to one end of the slot 10 and fits tightly against the outer wall of the insert post 31. The guard rods 300 are evenly distributed, and both ends of the guard rods 300 are welded and fixed to the arc-shaped railing 30.

[0051] In this utility model, the insert 31 is inserted into the slot 10, and the end of the first positioning bolt 101 passes through the first screw hole 100 and fits against the outer wall of the insert 31. The height of the arc-shaped railing 30 is manually lifted, and the position of the insert 31 in the slot 10 is fixed under the action of friction, so as to achieve height adjustment to prevent overturning.

[0052] Secondly, several through holes 21 communicating with the interior are provided on one side of the sound barrier 2. Side covers 210 are provided on the outer wall of the sound barrier 2 at the corresponding positions of the through holes 21. Sound-absorbing cotton 22 is provided in the middle of the interior of the sound barrier 2. Corrugated reflective plates 220 are provided on both sides of the sound-absorbing cotton 22. The bottom of the side cover 210 is hollowed out, and the width of the outer wall of the side cover 210 is greater than the width of the inner wall of the through hole 21. The side end of the side cover 210 is welded and fixed to the outer wall of the sound barrier 2. The width of the outer wall of the sound-absorbing cotton 22 is adapted to the width of the inner wall of the sound barrier 2. The corrugated reflective plate 220 is wavy and is bonded and fixed to the sound-absorbing cotton 22.

[0053] In this utility model, the side cover 210 cooperates with the through hole 21 to prevent rainwater from entering the interior when rainwater falls naturally, thus reducing the impact of rainwater on the internal sound-absorbing cotton 22 and corrugated reflector 220. The sound-absorbing cotton 22 absorbs the noise that is not reflected by the corrugated reflector 220, reducing the noise penetration of the sound barrier 2 and its impact on the other side of the environment.

[0054] In this embodiment of the railway guardrail, when in use, the same set of support columns 1 are first combined and fixed by multiple reinforcing rods 15. The two ends of the reinforcing rods 15 are respectively inserted into the corresponding slots 140 in the corresponding support column 1 through the locking pins 150. The second fixing bolt 152 passes through the locking block 14 and is threadedly connected to the third screw hole 151 to fix the position of the reinforcing rods 15. Then, the sound barrier 2 with sound-absorbing cotton 22 and corrugated reflector 220 is inserted into the T-slot 160 on the limiting column 16 through the T-block 20. The arc-shaped guardrail 30 with the guardrail 300 is inserted into the corresponding support column 1 top slot 10 through the insertion pin 31. With the cooperation of the first positioning bolt 101, the position of the insertion pin 31 in the slot 10 is fixed.

[0055] When two adjacent guardrails need to be combined and fixed, the universal joint 4 with trapezoidal blocks 40 at both ends is inserted into the trapezoidal groove 130 in the connecting seat 13 on the corresponding support column 1, and the fastening bolt 401 is threaded into the second screw hole 131. The fastening bolt 401 passes through the second screw hole 131 and is inserted into the through hole 400 to fix the position of the trapezoidal block 40 and the connecting seat 13.

[0056] The support column 1 is inserted into the ground through the ground insertion rod 110 and the fixing seat 11, which increases the stability of the support column 1 and the railway ground. When the protection is carried out on a flat railway surface, the universal joint 4 between the support columns 1 remains horizontal when two adjacent sets of guardrails are combined. When the protection needs to be bent on a flat railway surface, the universal joint 4 is manually bent according to the direction of bending. When the protection is carried out at the junction of a sloping railway surface and a flat railway surface, the connecting seat 13 and the rotating shaft seat 12 are rotated and adjusted, so that the two adjacent sets of guardrails can be combined and fixed. The combination and installation are convenient. For different positions of the overpass component 3, the arc-shaped guardrail 30 can be manually lifted and the height adjusted to restrict people or small animals from climbing over. The position is fixed under the action of the first positioning bolt 101, which increases the stability of the protection.

Claims

1. A railway guardrail, comprising two symmetrical support posts and a sound barrier inserted between the two support posts, characterized in that: An adjustable-height overpass assembly is provided above the support column. Several pivot seats are provided on one side wall of the support column, and each pivot seat is rotatably connected to a connecting seat. Universal joints are provided on the outer side of each connecting seat. A limiting post is provided on the other side wall of the support column. T-slots are provided on the outer wall of each limiting post. T-blocks are provided on the outer wall of each sound barrier. Several locking blocks are also provided on the side wall of the support column near the limiting post. Locking slots are provided on the top of each locking block. A reinforcing rod is provided between two locking slots on the same horizontal plane. Locking posts are provided at both ends of the reinforcing rod. The overpass assembly includes an arc-shaped fence panel and insert posts at the bottom of both ends of the arc-shaped fence panel. Several protective bars are provided in the middle of the arc-shaped fence panel. Slots are opened at the top of the support posts corresponding to the insert posts. A first screw hole communicating with the slot is opened on the outer wall of the support post near the top. A first positioning bolt is provided in the first screw hole. Several through holes communicating with the interior are provided on one side of the sound barrier. Side covers are provided on the outer wall of the sound barrier at the locations corresponding to the through holes. Sound-absorbing cotton is provided in the middle of the interior of the sound barrier, and corrugated reflective plates are provided on both sides of the sound-absorbing cotton. The universal joint consists of two U-shaped plates connected by a cross pivot. Each U-shaped plate has a trapezoidal block on its outer wall and a through hole at its side. Each through hole contains a fastening bolt.

2. The railway guardrail according to claim 1, characterized in that: Each support column is equipped with a fixed base at its bottom. A detachable grounding rod is inserted into the upper surface of the fixed base near the corner. The grounding rod has a round cap at its top and the bottom of the grounding rod passes through the fixed base.

3. The railway guardrail according to claim 1, characterized in that: The limiting column and the support column are welded and fixed. The sound barrier and the T-shaped block are integrally formed, and the width of the outer wall of the T-shaped block is adapted to the width of the inner wall of the T-shaped groove.

4. The railway guardrail according to claim 1, characterized in that: The card blocks are evenly spaced, and the sidewalls of the card blocks are tightly fitted to the sidewalls of the support columns and welded together. The reinforcing rod and the card column are integrally formed. The width of the outer wall of the card column is adapted to the width of the inner wall of the card slot. A third screw hole is provided on the card column, and a second fixing bolt is provided in the third screw hole. The second fixing bolt passes through the card block and is threadedly connected to the third screw hole.

5. The railway guardrail according to claim 1, characterized in that: The bottom of the arc-shaped guardrail is welded and fixed to the top of the insert post. The width of the outer wall of the insert post is adapted to the width of the inner wall of the slot. The first positioning bolt is threadedly connected to the first screw hole, and the first positioning bolt extends to one end of the slot and fits tightly against the outer wall of the insert post. The protective rods are evenly distributed, and the two ends of the protective rods are welded and fixed to the arc-shaped guardrail respectively.

6. The railway guardrail according to claim 1, characterized in that: The side wall of the rotating shaft seat is welded and fixed to the side wall of the support column. The connecting seat is rotatably connected to the rotating shaft seat. A trapezoidal groove is provided on the connecting seat. The width of the inner wall of the trapezoidal groove is adapted to the width of the outer wall of the trapezoidal block. The fastening bolt is threadedly connected to the second screw hole, and the fastening bolt passes through the hole.

7. The railway guardrail according to claim 1, characterized in that: The bottom of the side cover is hollowed out, and the width of the outer wall of the side cover is greater than the width of the inner wall of the through hole. The side end of the side cover is welded and fixed to the outer wall of the sound barrier. The width of the outer wall of the sound-absorbing cotton is adapted to the width of the inner wall of the sound barrier. The corrugated reflector is wavy and is bonded and fixed to the sound-absorbing cotton.