Municipal section steel guardrail capable of being quickly disassembled and assembled

Abstract

The invention relates to the technical field of guardrails, in particular to a municipal fast disassembly and assembly type steel guardrail which comprises a steel guardrail body, the steel guardrail body is formed by combining stand columns and four-connecting-rod steel rods hinged to each other to form a rhombus, and the steel guardrail is a foldable guardrail. The steel guardrail body is provided with a plurality of fixing devices which are convenient for people to quickly install the steel guardrail body on various environmental terrains and can prevent the steel guardrail body from toppling over. Compared with an existing quickly-mounted steel guardrail, the municipal quickly-mounted and quickly-dismounted type steel guardrail has the advantages that the fixing devices are additionally arranged, the supporting rods of the fixing devices can automatically extend downwards when a user pulls the steel guardrail open, the steel guardrail is supported, and the municipal quickly-mounted and quickly-dismounted type steel guardrail can adapt to the uneven ground; when the steel guardrail is installed on a soft surface, the supporting rods can be inserted into the supporting rods to support and fix the steel guardrail, the supporting rods can also be inserted into gaps to be fixedly installed on a gravel ground, and the using effect of the steel guardrail in various environments is improved.

Description

Technical Field

[0001] This invention relates to the field of guardrail technology, specifically to a quick-assembly and disassembly steel guardrail for municipal use. Background Technology

[0002] In municipal engineering, quick-installation steel guardrails are frequently needed for road construction, pipeline installation, and landscaping projects. Existing folding quick-installation steel guardrails utilize the instability of a quadrilateral to achieve rapid folding and unfolding. Diamond-shaped retractable guardrails are also a type of quick-installation steel guardrail; during installation, simply pull open the two side posts to unfold the guardrail, which can then be placed on the ground to provide barrier and isolation functions. Folding quick-installation steel guardrails are often used as temporary isolation barriers due to their advantages of folding and retracting, small footprint, ease of transportation, and rapid installation.

[0003] In temporary use areas, although folding guardrails are supported by posts on both sides, the ground conditions at these sites are complex, including cement, mud, gravel, and other uneven surfaces. Therefore, folding, quick-installation steel guardrails are prone to collapse and overturning in these challenging environments due to unstable support. Collapsed or overturned guardrails fail to serve their purpose of deterrence and warning, making it easy for people to accidentally enter prohibited areas and causing accidents. Furthermore, collapsed guardrails occupy surrounding space, causing inconvenience to nearby residents. If used along a highway, a collapse onto the road can also cause a serious accident. While some guardrails are secured with ground stakes at the base of the posts, when the guardrail is too long, even with the two posts secured by stakes, the middle section may bend or twist due to a lack of support. This lack of support also weakens the middle section, making it susceptible to damage under stress.

[0004] To address this, a quick-assembly steel guardrail for municipal use is proposed, which improves the stability of the foldable, quick-installation steel guardrail, enabling it to maintain stability in various environments and preventing collapse. Summary of the Invention

[0005] The purpose of this invention is to provide a quick-assembly and disassembly steel guardrail for municipal use. By setting a fixing device that can automatically extend and support itself when the steel guardrail is unfolded, it can be stably installed even on uneven ground and will not easily tip over.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A type of quick-assembly and disassembly steel guardrail for municipal use, comprising:

[0008] The steel guardrail body is composed of uprights and four steel rods that are hinged together in a diamond shape, and is a foldable guardrail.

[0009] The steel guardrail body is equipped with multiple fixing devices that facilitate quick installation in various environmental terrains and prevent it from tipping over. These fixing devices can be bolted, use counterweights to lower the center of gravity, or other devices or mechanisms that secure the steel guardrail body during installation. By adding these fixing mechanisms, the stability of the steel guardrail is improved, allowing it to be installed stably on uneven ground without easily tipping over.

[0010] Preferably, the fixing device includes a cylinder vertically fixedly installed on the steel guardrail body. The cylinder is located at the lower hinge point of the rhombus formed by the connecting rods on the steel guardrail body. A support rod is vertically slidably installed inside the cylinder. The support rod is cylindrical. A groove is vertically opened on both the left and right sides of the cylinder. A roller is provided on the left and right sides of the support rod. The two rollers are respectively rotatably installed at the left and right hinge points of the rhombus formed by the connecting rods on the steel guardrail body. A steel wire is connected between the rollers on the left and right sides of the support rod. The two ends of the steel wire are fixedly connected to the two rollers respectively. The steel wire is fixedly connected to the top of the support rod. With the support rod as the dividing line, the lengths of the steel wires on both sides of the support rod are equal. A limiting rod is horizontally fixedly installed on both the left and right sides of the support rod. The two limiting rods pass through the two grooves respectively and can slide up and down inside the grooves. A spring is wound between the limiting rod and the cylinder. When the steel guardrail is folded up, the two hinge points of the rhombus formed by the connecting rods are close to each other. Spring 1 pushes the support rod vertically upward. As the guardrail unfolds, the distance between the two rollers increases as the hinge points of the rhombus move further apart, gradually tightening the steel wire between the rollers. This tension causes the support rod to move downwards, which in turn moves the limit rod downwards, compressing the spring 1. When the two posts of the guardrail are pulled apart, the rhombus formed by the connecting rods unfolds, and the support rod extends downwards to support and fix the guardrail. The number of fixing devices can be selected as needed. Because of the fixing devices, the guardrail becomes a multi-point support system, making installation more stable. Furthermore, the support rods can be inserted into the fixing devices in soft sandy or muddy ground to further enhance stability.

[0011] Preferably, 2-4 downward-sloping feet are evenly distributed and fixedly installed on the lower circumference of the support rod. The evenly distributed feet can provide support to the support rod in more directions. Even on uneven ground, the feet can support the steel guardrail when it tilts, providing support to the steel guardrail body no matter which side it tilts to, further improving the stability of the steel guardrail during installation.

[0012] Preferably, a sleeve is fixedly installed on the lower side of each support rod, and 2-4 feet are rotatably installed on the side wall of each sleeve. A slot is opened on the side wall of the sleeve so that the feet can be retracted into the slot when rotated to be parallel to the axis of the sleeve. All the feet are rotatably installed on the side wall of the sleeve vertically downward. A trigger block is slidably installed inside the sleeve. A second spring is provided between the trigger block and the top of the sleeve. The second spring keeps the trigger block in a state of extending from the bottom of the sleeve. A slider is slidably installed on each foot, and a connecting rod is rotatably installed on each slider. Each connecting rod is rotatably connected to the top of the trigger block. When the trigger block is extended, it drives the support leg to remain retracted to the side wall of the sleeve via the connecting rod. When the support rod is pressed down, the trigger block inside the sleeve contacts the ground first. As the support rod is pressed down, the trigger block retracts into the sleeve, compressing the second spring. As the trigger block retracts into the sleeve, it pushes the connecting rod, which in turn pushes the support leg to open outward. The opened support leg supports the steel guardrail body. When the steel guardrail is used and retracted, the support rod moves the sleeve upward, the second spring returns to its original state, and the trigger block returns to its extended position. After the trigger block returns to its initial state, it drives the connecting rod to move, which in turn moves the support leg back to its original position against the side wall of the sleeve. This achieves automatic opening of the support leg when the steel guardrail is in use and automatic retraction when the steel guardrail is folded up after use. Compared to the above-mentioned fixed installation method of the support legs, this method can reduce the space occupied by the support legs when the steel guardrail is not in use and avoid the support legs from injuring users. However, compared to the fixed installation method of the support legs, the structure of this support leg installation method is more complicated.

[0013] Preferably, each support rod has a sleeve fixedly installed on its lower side, and multiple legs are rotatably installed on the side wall of each sleeve, with 2-4 legs rotatably installed on each sleeve side wall. A slot is provided on the side wall of the sleeve so that the legs can retract into the slot when rotated to be parallel to the sleeve axis. All supports are vertically and rotatably installed on the side wall of the sleeve. A protrusion is fixedly installed at the bottom of each leg. A trigger block is slidably installed inside the sleeve, with a groove on the trigger block that cooperates with the protrusion. A spring is provided between the trigger block and the top of the sleeve. When the steel guardrail body is unfolded, the support rod drives the sleeve to move downwards. After the trigger block below the sleeve contacts the ground, it is squeezed upwards. The trigger block contacts the sharp corner at the bottom of the leg and pushes it upwards. At this time, the inclined edge at the bottom and the hinge point form a lever. The leg starts to rotate outwards along the hinge point of the sleeve. When it rotates to be flush with the bottom of the slot on the sleeve, it can no longer rotate. At this time, the legs installed on the sleeve remain open to support the steel guardrail body. Compared to the aforementioned leg opening method, this opening method has a simpler structure, and the legs open flat, resulting in a larger contact area with the ground. On flat ground, it can provide more effective support for the steel guardrail body. The disadvantage is that on uneven ground, the support effect is not as good as the downward-sloping legs mentioned above.

[0014] Preferably, the steel wire is pulled upward by the support rod when the steel guardrail body is folded up. By setting the length of the steel wire, the steel wire is pulled upward by the support rod when the steel guardrail body is folded up, so as the spring pushes the support rod to move upward, the steel wire is prevented from drooping and getting tangled in other objects when the steel guardrail body is folded up, which would affect the next unfolding and use of the steel guardrail.

[0015] Preferably, the bottom of the trigger block is provided with a fastening module that further secures the support rod. The fastening module includes a conical block fixedly installed at the bottom of the trigger block. The conical block is made of metal and can be either a cone or a square pyramid. The pointed end of the conical block points vertically downwards. When installing the steel guardrail body on muddy, sandy, or gravelly ground, the conical block can more easily be driven into the ground or into gaps in the gravel, making the installation of the steel guardrail body more stable. Simultaneously, the conical block driving into the ground effectively prevents the steel guardrail body from folding and shrinking under external forces, thus reducing the guardrail's protective range.

[0016] Preferably, the fastening module includes a suction cup fixedly installed at the bottom of the trigger block. When the steel guardrail is used on a smooth surface such as a ceramic tile floor, the suction cup can grip the ground firmly, making the steel guardrail more secure and less likely to be knocked over.

[0017] Preferably, the fastening module includes a rubber block fixedly installed at the bottom of the trigger block. The rubber block is made of wear-resistant rubber, and its bottom surface is knurled. The rubber block, through friction with the ground on hard surfaces like concrete, increases the stability of the support rod, making it less prone to displacement under external forces that could ultimately cause the guardrail to collapse.

[0018] Preferably, the front and rear sides of the cylinder are rectangularly hollowed out, which can reduce the weight of the cylinder. A slot is horizontally opened at the front of the support rod, and a block is horizontally slidably installed inside the slot. The lower front end of the block is chamfered upwards, and a spring is horizontally arranged between the block and the bottom of the slot. As the support rod moves downward, the locking block is pushed into the slot by the inclined chamfer as it passes the cylinder. Spring three compresses the block, and as it passes the cylinder wall and enters the hollow area, it pops out again under the action of spring three. By setting the installation position of the locking block, the buckle can be positioned so that it enters the hollow area of ​​the sleeve and pops out when the support rod moves to its downward limit. Because the upper surface of the locking block is horizontal, the support rod cannot move upward under the action of spring one. After use, when the locking block is manually pressed into the slot, it passes the cylinder side wall, allowing the support rod to move upward. The locking block design ensures that the support rod is no longer pressed down by the tension of the steel wire during use. This prevents the support rod from moving upward even if the steel railing body slightly contracts during use, avoiding the situation where the support rod retracts due to changes in the tension of the steel wire, further improving the stability of the steel railing.

[0019] Furthermore, a buckle is rotatably installed on the cylinder. When the buckle is engaged, it prevents the locking block from moving upwards after it passes through the buckle and pops out of the slot. After the steel guardrail body is used up, the buckle can be manually opened. When the steel guardrail body is folded up, the locking block can move upwards under the action of the spring without being blocked by the buckle. This eliminates the need for manual pressing of the locking blocks to retract the support rod when folding up the steel guardrail body, thus increasing the speed of folding the steel guardrail body.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The municipal quick-installation steel guardrail of the present invention, compared with the existing quick-installation steel guardrail, adds a fixing device. The support rod of the fixing device can automatically extend downward when the user pulls the steel guardrail and support it. It can adapt to uneven ground. When installed on soft ground, the support rod can also be inserted into the gap to support and fix the steel guardrail. On gravel ground, it can also be inserted into the gap for fixed installation, improving the use effect of the steel guardrail in a variety of environments.

[0022] 2. The municipal quick-assembly steel guardrail described in this invention is equipped with multiple legs to further assist the support rod, so that the steel guardrail can provide more support points during use, enabling it to withstand more forces in multiple directions without easily collapsing. It can also provide multi-directional support when the steel guardrail is tilted, further improving the stability of the steel guardrail during use.

[0023] 3. The municipal quick-assembly steel guardrail of this invention is equipped with a locking block and a buckle that work together. After the locking block moves downward and passes the buckle, it pops out again. Furthermore, after the locking block passes the buckle, the support rod cannot automatically move upward. This prevents the support rod from automatically moving upward under the action of spring one when the steel guardrail is accidentally contracted by external force, thus ensuring the support rod provides support and further improving the stability of the steel guardrail. When the steel guardrail is folded up and the buckle is manually released, the support rod can automatically return to its initial state under the action of spring one. Similarly, when the steel guardrail is folded up after the buckle is manually released, the support rod can also automatically return to its initial state under the action of spring one. The buckle and locking block are convenient to use. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention when unfolded;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention during contraction;

[0026] Figure 3 For the present invention Figure 1 A schematic diagram of the structure of A in the middle;

[0027] Figure 4 This is a three-dimensional structural diagram of the buckle in this invention;

[0028] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the sleeve in Embodiment 2 of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the sleeve in Embodiment 3 of the present invention;

[0031] Figure 8 This is a schematic diagram of the installation structure of the card block of the present invention.

[0032] In the diagram: 1. Steel guardrail body; 2. Cylinder; 3. Support rod; 4. Slide groove; 5. Roller; 6. Steel wire; 7. Limiting rod; 8. Spring 1; 9. Support leg; 10. Sleeve; 11. Trigger block; 12. Spring 2; 13. Slider; 14. Connecting rod; 15. Slot; 16. Locking block; 17. Spring 3; 18. Buckle; 19. Conical block; 20. Suction cup; 21. Protrusion; 22. Groove. Detailed Implementation

[0033] Example 1:

[0034] The steel guardrails were installed on a gravel road section where sand and gravel had just been laid during construction.

[0035] refer to Figures 1 to 8 A type of quick-assembly and disassembly steel guardrail for municipal use includes: 1. a steel guardrail body; 2. a cylinder; 3. a support rod; 4. a sliding groove; 5. a roller; 6. a steel wire; 7. a limiting rod; 8. a spring; 9. a support leg; 15. a slot; 16. a locking block; 17. a spring; 18. a buckle; and 19. a conical block.

[0036] The steel guardrail body 1 is placed vertically on the ground. A roller 5 is installed at the two hinge points of each rhomboid formed by connecting rods on the steel guardrail body 1, with each rod spaced apart. A cylinder 2 is vertically fixed at the hinge point of the rhomboid connecting rod located between the two rollers 5. The front and rear sides of the sleeve 10 are square-shaped hollowed out. A sliding groove 4 is opened on both the left and right sides of the cylinder 2. A steel wire 6 is placed between the two rollers 5, with both ends of the steel wire 6 fixedly installed on the two rollers 5. A support rod 3 is slidably installed inside the sleeve 10, with the top of the support rod 3 fixedly connected to the midpoint of the steel wire 6. Two limit rods 7, which are cylindrical, are horizontally fixedly installed on the left and right sides of the support rod 3. Two limiting rods 7 respectively cooperate with the sliding grooves 4 on the left and right sides of the cylinder 2. The two limiting rods 7 can slide up and down along the two sliding grooves 4. Springs 8 are evenly wound on the support rod 3 between the two limiting rods 7 and the bottom of the cylinder 2. A slot 15 is horizontally opened on the front of the support rod 3. A locking block 16 is horizontally slidably installed inside the slot 15. The lower side of the part of the locking block 16 extending out of the slot 15 is inclined. A spring 17 is horizontally arranged between the bottom of the locking block 16 and the bottom of the slot 15. A buckle 18 is rotatably installed on the upper side of the front of the sleeve 10. Two support legs 9 are arranged in a figure-eight shape on the lower side of the support rod 3. The line connecting the two support legs 9 is perpendicular to the direction of the steel guardrail body 1 when it is unfolded. A conical block 19 is fixedly installed at the bottom of the support rod 3. The tip of the conical block 19 is vertically downward.

[0037] The specific workflow is as follows:

[0038] The user places the folded steel railing body 1 vertically on the sandy ground, and then pulls open the two posts of the steel railing body 1. The two hinge points on the left and right sides of the rhombus formed by the connecting rods on the opened steel railing body 1 will move away from each other, and at the same time, the two rollers 5 will move away from each other. The steel wire 6 between the rollers 5 will gradually tighten as the distance between the rollers 5 increases. The support rod 3 fixed at the midpoint of the steel wire 6 will move vertically downward along the cylinder 2 as the steel wire 6 tightens. The spring 1 8 is compressed as the support rod 3 moves downward. When the locking block 16 on the support rod 3 moves downward and contacts the buckle 18, the locking block 16 will be squeezed into the slot 15 by the buckle 18. The spring 3 17 will contract. After the locking block 16 passes the buckle 18, it will pop out again under the elastic force of the spring 2 12. The popped-out locking block 16 cannot pass upward through the buckle 18 under the elastic force of the spring 1 8. That is, the support rod 3 cannot move upward under the elastic force of the spring 1 8 and maintain a stable extended state. The conical block 19 at the bottom of the extended support rod 3 can penetrate into the sand and gravel, providing more support points for the steel fence body 1 in addition to the two side posts, thus ensuring a more stable installation. Multiple support points also allow the steel fence body 1 to remain straight and not bend during use. The support legs 9 on the lower side of the support rod 3 can also penetrate into the sand and gravel to support the steel fence body 1 in case it is about to tip over, further improving the stability of the steel fence. When the steel fence needs to be retracted after use, the user simply needs to open the buckles 18 on the top of each cylinder 2 and bring the two posts on the steel fence body 1 closer together to fold it up. During the folding process, the support rod 3 will be driven upward by the spring 8 to return to its original position. After the steel fence body 1 is folded up, the buckles 18 are snapped back into place to prepare for the next use.

[0039] Example 2:

[0040] The steel guardrail was installed in a green garden, and the ground in the green garden was dirt.

[0041] refer to Figures 1 to 8 Unlike Embodiment 1, a sleeve 10 is fixedly installed at the bottom of the support rod 3. A trigger block 11 is slidably installed inside the sleeve 10. A spring 12 is provided between the top of the trigger block 11 and the top of the sleeve 10. The spring 12 keeps the trigger block 11 in a state of extending out from the bottom of the sleeve 10. Three legs 9 are evenly distributed around the side wall of the sleeve 10. The top of the legs 9 is rotatably installed on the sleeve 10. A slider 13 is slidably installed on the side of each leg 9 near the sleeve 10. A connecting rod 14 is rotatably installed on each slider 13. Each connecting rod 14 is hinged to the top of the trigger block 11. A conical block 19 is fixedly installed at the bottom of the trigger block 11. The tip of the conical block 19 points vertically downward.

[0042] Unlike Embodiment 1, the support leg 9 on the lower side of the support rod 3 is retracted onto the side wall of the sleeve 10 and parallel to the sleeve 10 when not in use. When the support rod 3 moves downward and drives the sleeve 10 downward, the conical block 19 fixedly installed on the trigger block 11 extending from the bottom of the sleeve 10 will first contact the ground. If the ground is soft, the conical block 19 can penetrate into the ground to further fix the steel guardrail. If the ground is hard and the conical block 19 cannot penetrate, the conical block 19 will push the trigger block 11 to move into the sleeve 10, and the spring inside the sleeve 10 will... As the conical block 19 and trigger block 11 move toward the inside of the sleeve 10, they will drive the connecting rod 1 to move. The connecting rod 1 will then drive the support leg 9 to open outward. When the steel guardrail body 1 tilts or falls, the support leg 9 can provide further support to the steel guardrail body 1 to prevent it from falling. When the steel guardrail body 1 is folded back, under the action of the second spring 12, the trigger block 11 and conical block 19 will extend back to their initial state. After the trigger block 11 extends back, it will drive the support leg 9 to retract to the side wall of the sleeve 10, reducing the space occupied by the support leg 9.

[0043] The functions and implementation processes not described in this embodiment are the same as in Embodiment 1, so they will not be elaborated further.

[0044] Example 3:

[0045] The steel guardrail body 1 is used in a subway station, where the ground is covered with smooth ceramic tiles.

[0046] refer to Figures 1 to 8Unlike Embodiment 2, the support leg 9 is vertically rotated and mounted on the side wall of the sleeve 10. The support leg 9 no longer has a slider 13 or a connecting rod 14. Instead, a protrusion 21 is fixedly installed at the bottom of each support leg 9. A rubber anti-slip pad is fixedly installed on the side wall of each support leg 9. The trigger block 11 has a groove 22 that mates with the protrusion 21. The bottom of the trigger block 11 no longer has a conical block 19, but has a suction cup 20 made of nitrile rubber. When the support rod 3 extends, the suction cup 20 first contacts the tiled floor. As the support rod 3 moves downward, the air inside the suction cup 20 is expelled. As the support rod 3 continues to move downward, the trigger block 11 moves upward toward the inside of the sleeve 10. At this time, the lower wall of the groove 22 on the trigger block 11 drives the protrusion 21 fixedly installed on the support leg 9 to move upward. The support leg 9 rotates downward from above until it is parallel to the horizontal ground, at which point it can no longer rotate. At this point, the trigger block 11 has also been completely retracted into the sleeve 10. The suction cup 20 and the support leg 9 increase the friction between the steel guardrail body 1 and the ground, preventing the steel guardrail body 1 from slipping after being touched, thus preventing it from failing to provide a barrier and improving the stability of the steel guardrail body 1 during use. When retracted, the trigger block 11 inside the sleeve 10 moves downward under the action of the spring 12. The upper wall of the groove 22 moves the protrusion 21 downward, and the support leg 9 rotates upward from the horizontal direction along the mounting point until it is parallel to the sleeve 10.

[0047] The functions and implementation processes not described in this embodiment are the same as in Embodiment 2, so they will not be elaborated further.

[0048] Example 4:

[0049] The steel guardrail body 1 is used on an asphalt road.

[0050] Unlike Embodiment 3, the bottom of the trigger block 11 is no longer fitted with a suction cup 20. Instead, a rubber block made of wear-resistant rubber with anti-slip texture is fixedly installed. While the support leg supports the steel guardrail body 1, the rubber block with anti-slip texture can prevent the steel guardrail body 1 from shifting during use by increasing the friction between it and the road surface. Without shifting, the steel guardrail body 1 cannot play the role of warning or blocking vehicles and pedestrians.

[0051] Examples 1, 2, 3, and 4 provide further support for the steel guardrail body 1 in various environments, improving its environmental adaptability. Even on uneven ground such as sand and mud, it can be stably installed without easily tipping over, and requires minimal manual operation. The structure of Example 1 is simpler and has a lower manufacturing cost than Examples 2 and 3, but the support legs 9 on the lower side of the support rod 3 occupy more space when the steel guardrail body 1 is folded back. The support legs 9 in Examples 2 and 3 can automatically open and fold, and also fold when the steel guardrail body 1 is folded up, saving space. However, compared to Example 1, the structures of Examples 2 and 3 are more complex and have higher manufacturing costs. Compared with Example 3, Example 2 is more suitable for use in complex environments such as outdoors because the support leg 9 makes point contact after unfolding. The space required for unfolding in complex environments is less than that in Example 3, and it can be unfolded even in places with insufficient space. Example 3 is more stable for use in indoor environments. The suction cup 20, together with the support leg 9 that unfolds flat and contacts the ground, makes the installation of the steel guardrail body 1 very stable and not easy to shift. In Example 2, replacing the cone block 19 with a wear-resistant rubber block can also be used well in cement environments such as highways and squares.

[0052] The above embodiments are merely illustrative examples of the numerous embodiments of the present invention. Various modifications can be made without departing from the principles of the present invention. Embodiments created by those skilled in the art through modifications to the present invention without creative effort are also within the scope of protection of the present invention.

Claims

1. A quick-assembly and disassembly steel guardrail for municipal use, comprising: The steel guardrail body (1) is a rhomboid telescopic guardrail. The feature is that the steel guardrail body (1) is equipped with a number of fixing devices that enable people to quickly install the steel guardrail body (1) in various environments and terrains, and the fixing devices can reduce the possibility of the steel guardrail body (1) tipping over.

2. The quick-assembly and disassembly steel guardrail for municipal use according to claim 1, characterized in that: The fixing device includes a cylinder (2) vertically fixed on the steel guardrail body (1). A support rod (3) is vertically slidably installed inside the cylinder (2). Slide grooves (4) are opened on both the left and right sides of the cylinder (2). A roller (5) is provided on the left and right sides of the support rod (3). A steel wire (6) is connected between the rollers (5) on the left and right sides of the support rod (3). The steel wire (6) is fixedly connected to the top of the support rod (3). A limiting rod (7) is provided on both the left and right sides of the support rod (3). The two limiting rods (7) are respectively inserted into the two slide grooves (4). A spring (8) is wound between the two limiting rods (7) and the bottom of the cylinder (2).

3. A quick-assembly and disassembly steel guardrail for municipal use according to claim 2, characterized in that: The support rod (3) has multiple downward-sloping feet (9) evenly distributed and fixed on its lower circumference.

4. A quick-assembly and disassembly steel guardrail for municipal use according to claim 2, characterized in that: Each of the support rods (3) has a sleeve (10) fixedly installed on its lower side. Each of the sleeves (10) has multiple legs (9) rotatably installed on its side wall. The multiple legs (9) are rotatably installed vertically downward on the upper side of the sleeve (10). A trigger block (11) is slidably installed inside the sleeve (10). A spring (12) is provided between the trigger block (11) and the top of the sleeve (10). Each of the legs (9) has a slider (13) slidably installed on it. Each slider (13) has a connecting rod (14) rotatably installed on it. Each connecting rod (14) is rotatably connected to the top of the trigger block (11). The bottom of the trigger block (11) is provided with a fastening module for further stabilizing the steel guardrail body (1).

5. A quick-assembly and disassembly steel guardrail for municipal use according to claim 2, characterized in that: Each of the support rods (3) is fixedly installed with a sleeve (10) on its lower side. Multiple legs (9) are rotatably installed on the side wall of each sleeve (10). Multiple legs (9) are rotatably installed vertically upward on the side wall of the sleeve (10). Protrusions (21) are fixedly installed at the bottom of each of the multiple legs (9). A trigger block (11) is slidably installed inside the sleeve (10). A groove (22) is provided on the trigger block (11) to cooperate with the protrusion (21). A spring (12) is provided between the trigger block (11) and the top of the sleeve (10). A fastening module for further stabilizing the steel guardrail body (1) is provided at the bottom of the trigger block (11).

6. A quick-assembly and disassembly steel guardrail for municipal use according to any one of claims 3 to 5, characterized in that: The steel wire (6) is pulled upward by the support rod (3) when the steel guardrail body (1) is folded up.

7. A quick-assembly and disassembly steel guardrail for municipal use according to any one of claims 3 to 5, characterized in that: The cylinder (2) has hollowed-out front and rear sides. The support rod (3) has a horizontal slot (15). A card block (16) is horizontally slidably installed inside the slot (15). A spring three (17) is horizontally arranged between the card block (16) and the bottom of the slot (15).

8. A quick-assembly and disassembly steel guardrail for municipal use according to claim 7, characterized in that: A buckle (18) is rotatably mounted on the upper side.

9. A quick-assembly and disassembly steel guardrail for municipal use according to any one of claims 4 or 5, characterized in that: The fastening module includes a conical block (19) fixedly installed at the bottom of the trigger block (11).

10. A quick-assembly and disassembly steel guardrail for municipal use according to any one of claims 4 or 5, characterized in that: The fastening module includes a suction cup (20) fixedly installed at the bottom of the trigger block (11).

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