A foldable guardrail

Abstract

The invention discloses a foldable guardrail, belonging to the field of guardrails. The guardrail comprises a curb, a plurality of mounting grooves arranged in the curb, a buffer seat arranged in the mounting groove, and a guardrail arranged on the buffer seat, wherein one end of the mounting groove is communicated with the outer side of the curb, and the other end of the mounting groove is provided with a buffer surface, and the buffer seat comprises a mounting shaft arranged in the mounting groove and fixedly connected to the mounting groove, a sleeve sleeved on the outer side of the mounting shaft and rotatably connected to the mounting shaft, and a force transmission block arranged between the sleeve and the buffer surface. The invention is simple to operate and convenient to use, and the guardrail can play a role in daily safety protection, reduce the damage rate of the guardrail in floods and tsunamis, and reduce the stress on the bridge when floods and tsunamis occur.

Description

Technical Field

[0001] The invention relates to the field of guardrails, and in particular to a foldable guardrail. Background Art

[0002] Under the influence of the continental monsoon climate, rainfall in most parts of my country is concentrated and of high intensity. Affected by climatic and geographical conditions, flood disasters in my country are characterized by wide range, frequent occurrence, strong suddenness and large losses. Highway bridges or small-span railway bridges on provincial roads and township roads in my country are often subject to flood disasters. The southeastern coast of my country also has a high tsunami risk, and small-span coastal bridges or bridges in coastal cities are at high risk of being destroyed by tsunamis.

[0003] When a bridge is hit by a flood or tsunami, the flood, tsunami and the floating objects mixed in it are very destructive to the bridge. The force of the flood and tsunami on the railing accounts for a large proportion of the force of the flood and tsunami on the bridge superstructure. Studies have shown that the presence or absence of guardrails has a great impact on whether the superstructure is damaged and the degree of damage. However, existing guardrails are often solid guardrails that are directly fixed on the curb of the bridge or road and cannot be rotated. Therefore, existing guardrails are not a favorable solution. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes a foldable guardrail, and the specific technical solution is as follows:

[0005] A foldable guardrail, characterized in that it includes a curb, multiple groups of mounting grooves arranged in the curb, a buffer seat arranged in the mounting groove, and a railing arranged on the buffer seat, one end of the mounting groove is connected to the outside of the curb, and the other end of the mounting groove is provided with a buffer surface, the buffer seat includes a mounting shaft arranged in the mounting groove and fixedly connected to the mounting groove, a sleeve sleeved on the outside of the mounting shaft and rotatably connected to the mounting shaft, and a force transmission block arranged between the sleeve and the buffer surface.

[0006] In the present invention, the sleeve sleeved on the outside of the installation axis can rotate along the installation axis, so that the railing arranged on the sleeve can rotate around the installation axis at a certain angle. In daily safety protection, the railing is placed in a vertical state with the curb. When the railing is in a vertical state with the curb and the railing is subjected to an inner force, the force transfer block can effectively transfer the load to the buffer surface. Before a flood or tsunami occurs, the railing together with the sleeve is rotated 90 degrees to a horizontal position in the direction of the center line of the road and the railing is constrained in a horizontal position to prevent it from rotating or vibrating under the action of the water flow. After the flood or tsunami is over, the railing is supported to a vertical position to play a role in daily safety protection.

[0007] Preferably, one side of the force transmission block is fixedly connected to the mounting shaft, and the other side of the force transmission block is tightly fitted to the buffer surface.

[0008] In the present invention, the force transmission block is located on one side of the buffer surface and fits closely with the buffer surface, thereby increasing the contact area between the force transmission block and the buffer surface, achieving the purpose of fully transmitting the force received on the inner side of the railing to the curb, and playing a role in daily safety protection.

[0009] Preferably, a side of the force transmission block close to the bottom of the installation groove is perpendicular to the buffer surface and is located on the same plane as the central axis of the installation shaft.

[0010] The present invention arranges the force transmission block on one side close to the bottom of the installation groove perpendicular to the buffer surface and makes it located on the same plane as the central axis of the installation shaft. This ensures that the force transmission block can effectively transfer the load to the buffer surface when the handrail is subjected to an inner force, and also ensures that the sleeve and the handrail can rotate smoothly around the installation shaft toward the center line of the road without being hindered by the buffer surface.

[0011] Preferably, the sleeve is provided with a plurality of first fixing holes arranged parallel to the railing, the mounting shaft is provided with second fixing holes corresponding to the first fixing holes and third fixing holes arranged perpendicular to the second fixing holes and corresponding to the first fixing holes.

[0012] Preferably, the diameters of the first fixing hole, the second fixing hole and the third fixing hole are all the same.

[0013] The present invention enables the railing to be fixed and constrained on a horizontal plane and a vertical plane perpendicular to the horizontal plane respectively by using the first fixing hole in cooperation with the second fixing hole and the third fixing hole respectively.

[0014] Preferably, a hollow vertical cylinder is provided between the sleeve and the railing.

[0015] The present invention provides a hollow vertical cylinder between the sleeve and the railing, so that maintenance personnel can easily replace and repair the railing.

[0016] Preferably, the railing includes a vertical pole arranged in a hollow vertical tube and a plurality of groups of horizontal poles arranged on the vertical pole.

[0017] Preferably, the buffer surface and the bottom of the installation groove are arranged obliquely, and the angle between the buffer surface and the bottom of the installation groove is an obtuse angle.

[0018] The present invention has the following beneficial effects:

[0019] The present invention allows the railing to rotate around the installation axis at a certain angle by means of a sleeve that is sleeved on the outside of the installation axis. In daily safety protection, the railing is in a vertical state with the curb and when the railing is subjected to an inner force, the force transfer block can effectively transfer the load to the buffer surface. Before a flood or tsunami occurs, the railing together with the sleeve is rotated 90 degrees to a horizontal position in the direction of the center line of the road and the railing is constrained in a horizontal position to prevent it from rotating or vibrating under the action of the water flow. After the flood or tsunami ends, the railing is supported to a vertical position to play a role in daily safety protection. The present invention is simple to operate and easy to use. The railing can play a daily safety protection role and reduce the damage rate of the railing in flood and tsunami disasters. At the same time, it can reduce the force on the bridge when flood and tsunami disasters occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 is a side view of the present invention;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B in the middle.

[0024] In the figure: 1-curb; 2-mounting groove; 3-buffer seat; 4-rail; 21-buffer surface; 31-mounting shaft; 32-sleeve; 33-force transmission block; 5-first fixing hole; 6-second fixing hole; 7-third fixing hole; 8-hollow vertical cylinder; 41-vertical pole; 42-cross bar. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example

[0027] See also Figures 1 to 4 The present invention includes a curb 1 for installing a handrail 4 and a handrail 4 arranged on the curb 1 and playing a daily safety protection role. The curb 1 is provided with three sets of mounting grooves 2 on the side close to the road, and a buffer seat 3 for installing the handrail 4 is arranged in the mounting groove 2, and the handrail 4 is arranged on the buffer seat 3. The end of the mounting groove 2 close to the road is connected to the outside of the curb 1 and is open, and the end of the mounting groove 2 away from the road is provided with a buffer surface 21 for buffering the load of the handrail 4. The buffer surface 21 is inclined with respect to the bottom of the mounting groove 2, and the included angle between the buffer surface 21 and the bottom of the mounting groove 2 is an obtuse angle.

[0028] See also Figure 2and Figure 4 The buffer seat 3 includes a mounting shaft 31 disposed in the mounting groove 2 and fixedly connected to the mounting groove 2, a sleeve 32 sleeved outside the mounting shaft 31 and rotatably connected to the mounting shaft 31, and a force transmission block 33 disposed between the sleeve 32 and the buffer surface 21 and used to transmit the load of the handrail 4. A hollow vertical cylinder 8 is disposed between the sleeve 32 and the handrail 4. The present invention facilitates maintenance personnel to replace and repair the handrail 4 by disposing the hollow vertical cylinder 8 between the sleeve 32 and the handrail 4. The handrail 4 includes a vertical pole 41 disposed in the hollow vertical cylinder 8 and a plurality of horizontal poles 42 disposed on the vertical pole 41.

[0029] The sleeve 32 sleeved on the outside of the installation shaft 31 can rotate along the installation shaft 31, so that the handrail 4 set on the sleeve 32 can rotate around the installation shaft 31 at a certain angle. In daily safety protection, the handrail 4 is placed in a vertical state with the road surface. When the handrail 4 is in a vertical state with the road surface and the handrail 4 is subjected to an inner force, the force transmission block 33 can effectively transfer the load to the buffer surface 21. Before a flood or tsunami occurs, the handrail 4 together with the sleeve 32 is rotated 90 degrees to a horizontal position in the direction of the center line of the road and the handrail 4 is constrained in a horizontal position to prevent it from rotating or vibrating under the action of the water flow. After the flood or tsunami is over, the handrail 4 is supported to a vertical position to play a role in daily safety protection.

[0030] See also Figure 3 and Figure 4 , the side of the force transmission block 33 close to the installation shaft 31 is fixedly connected to the installation shaft 31, and the other side of the force transmission block 33 away from the installation shaft 31 is closely fitted with the buffer surface 21. The side of the force transmission block 33 close to the buffer surface 21 is closely fitted with the buffer surface 21, which increases the contact area between the force transmission block 33 and the buffer surface 21, so as to achieve the purpose of fully transmitting the force received by the inner side of the railing 4 to the curb 1, and play a role in daily safety protection. The side of the force transmission block 33 close to the bottom of the installation groove 2 is perpendicular to the buffer surface 21 and is located on the same plane as the central axis of the installation shaft 31. The present invention sets the side of the force transmission block 33 close to the bottom of the installation groove 2 perpendicular to the buffer surface 21 and makes it located on the same plane as the central axis of the installation shaft 31, which not only ensures that the force transmission block 33 can effectively transfer the load to the buffer surface 21 when the railing 4 is subjected to the inner force, but also ensures that the sleeve 32 and the railing 4 can rotate smoothly without being hindered by the buffer surface 21 when rotating around the installation shaft 31 toward the center line of the road.

[0031] See also Figure 2 and Figure 4The sleeve 32 is provided with a plurality of first fixing holes 5 arranged parallel to the railing 4, the mounting shaft 31 is provided with second fixing holes 6 corresponding to the first fixing holes 5 and third fixing holes 7 arranged perpendicular to the second fixing holes 6 and corresponding to the first fixing holes 5, and the diameters of the first fixing holes 5, the second fixing holes 6 and the third fixing holes 7 are all the same. By using the first fixing holes 5 in conjunction with the second fixing holes 6 and the third fixing holes 7, the railing 4 can be fixed and constrained on a horizontal plane and a vertical plane perpendicular to the horizontal plane.

[0032] When the railing 4 needs to be fixed and constrained in the horizontal plane, the railing 4 together with the sleeve 32 is rotated 90 degrees in the direction of the road centerline to a horizontal position and the railing 4 is constrained in the horizontal position, and then the screw is sequentially passed through the first fixing hole 5 and the third fixing hole 7 to realize the horizontal plane constraint of the railing 4. When the railing 4 needs to be fixed and constrained in a vertical plane perpendicular to the horizontal plane, the railing 4 together with the sleeve 32 is rotated 90 degrees in the direction away from the road centerline to a horizontal position and the railing 4 is constrained in a vertical position, and then the screw is sequentially passed through the first fixing hole 5 and the second fixing hole 6 to realize the vertical plane constraint of the railing 4. The present invention is simple to operate and easy to use. The railing 4 can not only play a daily safety protection role, reduce the damage rate of the railing 4 in floods and tsunamis, but also reduce the stress on the bridge when floods and tsunamis occur.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable guardrail, characterized in that: The utility model comprises a curb (1), a plurality of mounting grooves (2) arranged in the curb (1), a buffer seat (3) arranged in the mounting grooves (2), and a handrail (4) arranged on the buffer seat (3), wherein one end of the mounting groove (2) is communicated with the outside of the curb (1), and the other end of the mounting groove (2) is provided with a buffer surface (21), and the buffer seat (3) comprises a mounting shaft (31) arranged in the mounting groove (2) and fixedly connected to the mounting groove (2), a sleeve (32) sleeved on the outside of the mounting shaft (31) and rotatably connected to the mounting shaft (31), and a force transmission block (33) arranged between the sleeve (32) and the buffer surface (21); One side of the force transmission block (33) is fixedly connected to the mounting shaft (31), and the other side of the force transmission block (33) is tightly fitted to the buffer surface (21); the sleeve (32) is provided with a plurality of first fixing holes (5) arranged parallel to the railing (4); the mounting shaft (31) is provided with second fixing holes (6) corresponding to the first fixing holes (5) and third fixing holes (7) arranged perpendicular to the second fixing holes (6) and corresponding to the first fixing holes (5); The buffer surface (21) and the bottom of the mounting groove (2) are arranged obliquely, and the included angle between the buffer surface (21) and the bottom of the mounting groove (2) is an obtuse angle.

2. The foldable guardrail according to claim 1, characterized in that: The side of the force transmission block (33) close to the bottom of the installation groove (2) is perpendicular to the buffer surface (21) and is located on the same plane as the central axis of the installation shaft (31).

3. The foldable guardrail according to claim 1, characterized in that: The diameters of the first fixing hole (5), the second fixing hole (6) and the third fixing hole (7) are all the same.

4. The foldable guardrail according to claim 1, characterized in that: A hollow vertical cylinder (8) is provided between the sleeve (32) and the railing (4).

5. The foldable guardrail according to claim 4, characterized in that: The handrail (4) comprises a vertical rod (41) arranged in a hollow vertical cylinder (8) and a plurality of groups of horizontal rods (42) arranged on the vertical rod (41).

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