Road protective fence

Abstract

The utility model discloses a road protective fence, which relates to the technical field of protective fences and comprises a bottom support plate, five isolation rods are arranged at the upper end of the bottom support plate, extension rods are arranged at the upper ends of the five isolation rods, and a top support plate is arranged at the upper ends of the five extension rods; the assembling clamping grooves are formed in the outer walls of the two sides of the bottom supporting plate and the top supporting plate, a filling connecting rod is installed in every two adjacent assembling clamping grooves, a movable inner cavity is formed in the lower section of filling connecting rod, and a limiting end is arranged in the movable inner cavity; the hollow screw cavities are formed in the isolation rods, limiting screw heads are movably arranged in the hollow screw cavities, and penetrating connection rods are welded between the limiting screw heads and the extension rods. And the guardrail of which the height cannot be adjusted cannot meet the requirement of road protection and isolation.

Description

Technical Field

[0001] The utility model relates to the technical field of guardrails, in particular to a road guardrail. Background Art

[0002] Road guardrails are an important type of transportation infrastructure, mainly used to isolate the traffic behavior of vehicles, pedestrians and non-motor vehicles, aiming to ensure traffic safety. They are usually set up on both sides of the road to reduce the occurrence of traffic accidents through physical isolation. The design and installation of road guardrails take into account many factors, including material, structural strength, corrosion resistance, etc., to ensure that they can play their role effectively in the long term.

[0003] For example, the announcement number is: CN217399490U (named as a road guardrail), which includes multiple columns, multiple protective meshes and several rollers. The multiple columns are vertically fixed on the ground, and the multiple columns are arranged equidistantly. The multiple protective meshes are arranged between two adjacent columns. Support plates are horizontally provided on the upper and lower sides of one side of the multiple protective meshes. A plurality of connecting rods are evenly and vertically provided between a pair of support plates. The rollers are rotatably sleeved on the connecting rods. When installing the guardrail, the pair of columns are evenly and equidistantly fixed on the ground, and then the multiple protective meshes are fixed between two adjacent columns, and the side with the support plate is facing the side where the car is traveling, and then the multiple rollers are fixed between a pair of support plates. In the event of an accident, a car will collide with the guardrail. The moment the car contacts the side of the roller, the roller rotates at the speed of the car, gradually moving the car in the direction of rotation. The roller also applies a certain buffering force to the car, thereby reducing the impact force on the guardrail. By setting up a safe guardrail, the roller rotates when the car hits the guardrail at high speed, and the roller quickly changes direction and cushions the car, thereby improving the use of the guardrail.

[0004] During the use of the above-mentioned guardrails, the guardrail heights required at different road locations are different, resulting in the problem that the guardrails that cannot be adjusted in height cannot meet the road protection and isolation needs. For this reason, we provide a road guardrail. Utility Model Content

[0005] The purpose of the present utility model is to provide a road guardrail to solve the problem that the existing guardrails proposed in the above background technology cannot meet the road protection and isolation requirements due to the different guardrail heights required for different road positions during use, resulting in the guardrails that cannot be adjusted in height.

[0006] To achieve the above object, the utility model provides the following technical solution: a road guardrail, comprising a bottom support plate, wherein the upper end of the bottom support plate is provided with five isolation rods, the upper ends of the five isolation rods are each provided with an extension rod, and the upper ends of the five extension rods are provided with a top support plate;

[0007] Also includes:

[0008] An assembly slot is provided on the outer walls of both sides of the bottom support plate and the top support plate, and a filling connecting rod is installed inside two adjacent assembly slots, a movable inner cavity is provided inside the lower filling connecting rod, and a limited end is provided inside the movable inner cavity;

[0009] A hollow screw cavity is provided inside the isolation rod, and a limit screw head is movably provided inside the hollow screw cavity, and a connecting rod is welded between the limit screw head and the extension rod;

[0010] The limiting frame plate is welded and arranged at the bottom position of the filling connecting rod. The size of the limiting frame plate is larger than the diameter of the assembly slot, and a support seat is welded at the lower end of the limiting frame plate, and a mounting hole plate is welded at the lower end of the support seat.

[0011] Preferably, the top of the filling connecting rod is provided with a threaded inner groove, a threaded rod is installed inside the threaded inner groove, and a limiting screw disk is welded on the upper end of the threaded rod, and the size of the limiting screw disk is larger than the diameter of the assembly slot.

[0012] Preferably, an inner circular groove is provided on the inner wall of the bottom of the top support plate, a connecting shaft is provided inside the inner circular groove, and the connecting shaft and the extension rod are an integrated structure.

[0013] Preferably, a bearing is fixed on the inner wall of the inner circular groove by nail-free glue, and an anti-slip disk is welded on one end of the connecting shaft, and the size of the anti-slip disk is larger than the caliber of the bearing.

[0014] Preferably, a stretch rod is welded between the limiting end and the upper filling connecting rod, the stretch rod is connected with the movable inner cavity through penetration, and the size of the limiting end is larger than the caliber of the position where the stretch rod is connected.

[0015] Preferably, the connecting rod is connected to the interior of the hollow screw cavity, and the size of the limiting screw head is larger than the diameter of the connecting rod's connecting position.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model uses the forward and reverse rotation of the extension rod to allow the limiting screw head to move up and down inside the hollow screw cavity. When the extension rod rotates, the connecting shaft and the anti-slip shaft disk rotate inside the inner circular groove, and cooperate to drive the top support plate to move up and down, thereby adjusting the height of the guardrail. This overcomes the problem that the existing guardrail cannot meet the road protection and isolation requirements due to the different guardrail heights required for different road positions during use.

[0018] 2. By pulling the filling connecting rod, the limit end moves in a guided manner inside the movable inner cavity during the pulling process, so that the filling connecting rod is pulled to a height flush with the top support plate, and the filling connecting rod fills and connects two adjacent assembly slots, thereby facilitating the combination and connection of two adjacent guardrails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the road guardrail structure of the present utility model;

[0020] Figure 2 This is a top view of the road guardrail structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the road guardrail of the present utility model;

[0022] Figure 4 This is an enlarged schematic diagram of the structure of part A of the present utility model;

[0023] In the figure: 1. Bottom support plate; 2. Top support plate; 3. Assembly slot; 4. Isolation rod; 5. Extension rod; 6. Filler connecting rod; 7. Threaded inner groove; 8. Limit screw disk; 9. Support seat; 10. Mounting hole plate; 11. Limit frame plate; 12. Threaded rod; 13. Hollow screw cavity; 14. Limit screw head; 15. Connecting rod; 16. Movable inner cavity; 17. Limit end; 18. Extension rod; 19. Inner circular groove; 20. Bearing; 21. Connecting shaft; 22. Anti-slip disc. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: a road guardrail, comprising a bottom support plate 1, five isolation rods 4 are provided at the upper end of the bottom support plate 1, extension rods 5 are provided at the upper ends of the five isolation rods 4, and a top support plate 2 is provided at the upper ends of the five extension rods 5;

[0026] Also includes:

[0027] The assembly slots 3 are provided on the outer walls of both sides of the bottom support plate 1 and the top support plate 2, and the filling connecting rods 6 are installed inside the two adjacent assembly slots 3. The interior of the lower filling connecting rod 6 is provided with a movable inner cavity 16, and the interior of the movable inner cavity 16 is provided with a limit end 17;

[0028] A hollow screw cavity 13 is provided inside the isolation rod 4, and a limit screw head 14 is movably provided inside the hollow screw cavity 13, and a connecting rod 15 is welded between the limit screw head 14 and the extension rod 5;

[0029] The limiting frame plate 11 is welded and set at the bottom position of the filling connecting rod 6. The size of the limiting frame plate 11 is larger than the diameter of the assembly slot 3, and the lower end of the limiting frame plate 11 is welded with a support seat 9, and the lower end of the support seat 9 is welded with a mounting hole plate 10.

[0030] When in use, the limit screw head is moved up and down inside the hollow screw cavity by reversing the extension rod forward and backward. When the extension rod rotates, the connecting shaft and the anti-slip shaft disk rotate inside the inner circular groove, and cooperate to drive the top support plate to move up and down, thereby adjusting the height of the guardrail. By pulling the filling connecting rod, the limit end is guided inside the movable inner cavity during the pulling process, so that the filling connecting rod is pulled to a height flush with the top support plate. The filling connecting rod fills and connects two adjacent assembly slots, thereby facilitating the combination and connection of two adjacent guardrails.

[0031] See also Figure 1 The top of the filling connecting rod 6 is provided with a threaded inner groove 7, and a threaded rod 12 is installed inside the threaded inner groove 7. The upper end of the threaded rod 12 is welded with a limiting screw disk 8. The size of the limiting screw disk 8 is larger than the diameter of the assembly slot 3. The threaded inner groove set at the top of the filling connecting rod 6 serves to facilitate the installation of the limiting screw disk 8 to the top position of the filling connecting rod 6.

[0032] See also Figure 4 An inner circular groove 19 is provided on the inner wall of the bottom of the top support plate 2, and a connecting shaft 21 is provided inside the inner circular groove 19. The connecting shaft 21 and the extension rod 5 are an integral structure. The inner circular groove 19 provided on the inner wall of the bottom of the top support plate 2 plays the role of supporting the bearing 20 to assist the rotation of the connecting shaft 21.

[0033] See also Figure 4 A bearing 20 is fixed on the inner wall of the inner circular groove 19 by means of nail-free glue, and an anti-slip disc 22 is welded on one end of the connecting shaft 21. The size of the anti-slip disc 22 is larger than the diameter of the bearing 20. The bearing 20 fixed on the inner wall of the inner circular groove 19 by means of nail-free glue serves to facilitate the plug-in connection of the connecting shaft 21.

[0034] See also Figure 3A stretching rod 18 is welded between the limiting end 17 and the upper filling connecting rod 6. The stretching rod 18 is connected to the movable inner cavity 16. The size of the limiting end 17 is larger than the diameter of the connecting position of the stretching rod 18. The stretching rod 18 welded between the limiting end 17 and the upper filling connecting rod 6 plays a role in assisting the filling connecting rod 6 to stretch and move.

[0035] See also Figure 3 The connecting rod 15 is connected to the inside of the hollow screw cavity 13, and the size of the limiting screw head 14 is larger than the diameter of the connecting rod 15 at the connecting position.

[0036] Working principle: When in use, the limit screw head 14 is moved up and down inside the hollow screw cavity 13 by reversing the extension rod 5 forward and backward. When the extension rod 5 rotates, the connecting shaft 21 and the anti-slip shaft disc 22 rotate inside the inner circular groove 19, and cooperate to drive the top support plate 2 to move up and down, thereby adjusting the height of the guardrail. After the height adjustment of the guardrail is completed, the filling connecting rod 6 is pulled. During the pulling process, the limit end 17 is guided inside the movable inner cavity 16, so that the filling connecting rod 6 is pulled to a height flush with the top support plate 2. The filling connecting rod 6 fills and hooks the two adjacent assembly slots 3, thereby facilitating the combination and connection of the two adjacent guardrails. Finally, through the corresponding connection between the threaded rod 12 and the threaded inner groove 7, the limit screw disc 8 is installed to the top position of the filling connecting rod 6 for anti-slip limiting, completing the use of the road guardrail.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A road guardrail, comprising a bottom support plate (1), wherein the upper end of the bottom support plate (1) is provided with five isolation rods (4), the upper ends of the five isolation rods (4) are all provided with extension rods (5), and the upper ends of the five extension rods (5) are provided with a top support plate (2); Its characteristics are: Also includes: An assembly slot (3) is provided on both side outer walls of the bottom support plate (1) and the top support plate (2), and a filling connecting rod (6) is installed inside two adjacent assembly slots (3), a movable inner cavity (16) is provided inside the lower filling connecting rod (6), and a limiting end head (17) is provided inside the movable inner cavity (16); A hollow screw cavity (13) is arranged inside the isolation rod (4), and a limiting screw head (14) is movably provided inside the hollow screw cavity (13), and a connecting rod (15) is welded between the limiting screw head (14) and the extension rod (5); A limiting frame plate (11) is welded and arranged at the bottom position of the filling connecting rod (6); the size of the limiting frame plate (11) is larger than the diameter of the assembly slot (3); and a support seat (9) is welded at the lower end of the limiting frame plate (11); and a mounting hole plate (10) is welded at the lower end of the support seat (9).

2. A road guardrail according to claim 1, characterized in that: The top of the filling connecting rod (6) is provided with a threaded inner groove (7), a threaded rod (12) is installed inside the threaded inner groove (7), and a limiting screw disk (8) is welded to the upper end of the threaded rod (12), and the size of the limiting screw disk (8) is larger than the diameter of the assembly slot (3).

3. A road guardrail according to claim 1, characterized in that: An inner circular groove (19) is provided on the inner wall of the bottom of the top support plate (2), a connecting shaft (21) is provided inside the inner circular groove (19), and the connecting shaft (21) and the extension rod (5) are an integrated structure.

4. A road guardrail according to claim 3, characterized in that: A bearing (20) is fixed on the inner wall of the inner circular groove (19) by means of nail-free glue, and an anti-slip disc (22) is welded on one end of the connecting shaft (21). The size of the anti-slip disc (22) is larger than the diameter of the bearing (20).

5. The road guardrail according to claim 1, characterized in that: A stretching rod (18) is welded between the limiting end (17) and the upper filling connecting rod (6), and the stretching rod (18) is connected to the movable inner cavity (16). The size of the limiting end (17) is larger than the diameter of the position where the stretching rod (18) is connected.

6. The road guardrail according to claim 1, characterized in that: The connecting rod (15) is connected to the interior of the hollow screw cavity (13) through the connecting rod, and the size of the limiting screw head (14) is larger than the diameter of the connecting rod (15) through-connection position.

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